Looking for a watch that lasts a lifetime—or even long enough to pass down? Choosing a durable, repairable, and accurate timepiece isn’t just about style; it’s…
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The Casio MDV-106 Duro is a cult-favorite dive watch known for its affordable durability and clean, functional design. Despite its budget price, it offers a stainless-steel case, a reliable Japanese quartz movement, and 200 m water resistance—features typically found in far pricier models. Owners praise its ability to handle daily wear, saltwater exposure, and rough use with little visible wear. While not repair-oriented like luxury mechanical divers, its simple construction and widely available batteries make it easy to maintain over years of use.
From a longevity perspective, the Duro’s biggest strength is its proven reliability and low-maintenance design. The mineral crystal can scratch more easily than sapphire but is inexpensive to replace. The unidirectional bezel and screw-down crown add to the watch’s functional toughness, though customization or part replacement options are limited compared to enthusiast-grade brands.
Casio backs the MDV-106 with a 1-year limited warranty, covering defects in materials and workmanship but excluding the case, band, glass, and battery. Warranty service is free for repairs but requires the customer to pay for shipping. The warranty language is clearly published online and easy to understand, though coverage is not transferable and shorter than average for long-term ownership. Even with modest warranty terms, the Duro’s track record for lasting performance and thousands of positive long-term reviews make it one of the most durable watches under $100.
Casio is one of Japan’s most enduring tech brands, known for turning everyday tools into reliable, long-lasting companions. Founded in 1957, the company built its reputation on precision engineering and inventive design—from the first digital watches to today’s solar-powered and Bluetooth-connected timepieces. Casio’s guiding principle of “Creativity and Contribution” emphasizes creating original, useful products that stand the test of time, a philosophy reflected in its G-Shock line—widely praised for durability, water resistance, and real-world toughness.
The company’s sustainability efforts go beyond slogans. Casio is a long-time member of the UN Global Compact and follows ISO 26000 social responsibility standards, signaling a structured commitment to ethical and environmental goals. While its mission statements focus more on innovation and user enjoyment than explicit repairability, Casio’s longevity as a brand—publicly listed, financially stable, and continuously innovating—suggests a solid foundation for long-term product support.
Shoppers who value dependable, low-maintenance watches and accessible technology often see Casio as a trustworthy choice. From the indestructible G-Shock to minimalist analog models, the brand’s strength lies in making well-engineered, affordable devices that consistently deliver durability and reliability decade after decade.
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Mission & Values
Whether the brand explicitly commits to durability, repairability, and sustainability.
Ideal: Brand mission and actions clearly prioritize long-lasting, repairable products.
Confidence —
MEDIUM
3 sources
65.0%
(W 40%)
PRO
:contentReference[oaicite:0]{index=0} articulates a clear Purpose: “Through the power to put wonder at hand, bring new levels of joy to lives one by one.” Their corporate creed “Creativity and Contribution” emphasises creating original, useful products and contributing to society, which aligns with long-term product value. They have formal sustainability frameworks: membership of the UN Global Compact (since 2010) and using ISO 26000 guidance, indicating mature commitment.
CON
While sustainability and social responsibility are emphasised, there is less explicit language about **repairability** or **long-life product support** in their public mission statements.The mission and values focus more on innovation and creativity than on durable/heirloom product design or repair infrastructure being central.
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Track Record / Reputation
Independent history of reliability and consumer trust.
Ideal: Decades of consistent positive reputation from reviews, watchdogs, and experts.
Confidence —
MEDIUM
3 sources
70.0%
(W 40%)
PRO
Casio has been manufacturing watches since the company’s establishment in 1957 and has sustained global presence in timepieces for decades. Reviews of the G-Shock line praise its durability in harsh conditions (resin case, 200 m water resistance, minimal wear) indicating strong real-world performance.
CON
Some customer-service reviews (e.g., via Trustpilot) cite issues with support, repair cost and warranty clarity, which may affect perceived reliability of after-sales experience. While product durability is widely praised, less third-party detailed analysis is available on long-term repairability and spare-part availability for all Casio watch models.
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Corporate Stability
Financial and organizational stability of the brand or company.
Ideal: Established, stable company with low risk of discontinuing support.
Confidence —
HIGH
3 sources
80.0%
(W 20%)
PRO
Casio Computer Co., Ltd. is publicly listed, founded in 1957, with net sales ~¥261,757 million and 8,801 employees (as of March 31, 2025) — indicating substantive size and long-term operations. Casio maintains structured corporate governance with risk-management and business-continuity planning (e.g., Crisis Management Manual, business continuity task force) suggesting resilience.
CON
Recent reporting (via third-party sources) points to a ransomware attack disrupting earnings in 2024, which could indicate exposure to operational risk. Some business segments (e.g., electronic dictionaries) are being scaled back, implying the need for Casio to pivot—though watches remain a core business.
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Coverage
Scope of what failures the warranty covers.
Ideal: Full coverage of defects and workmanship, including all major components.
Confidence —
HIGH
2 sources
40.0%
(W 20%)
PRO
Covers defects in quality/workmanship for the watch during the warranty period.Repair or replacement with reconditioned parts/models at no parts or labor charge for valid claims.
CON
Excludes consumables and items with limited resistance such as battery, band, case, and glass.Damage from improper use, unauthorized repair, or lack of proof of purchase is not covered.
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Duration
Length of warranty term.
Ideal: ≥10 years (lifetime where feasible).
Confidence —
HIGH
2 sources
10.0%
(W 30%)
DATA
1 year
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Ease
How simple it is to file and process a warranty claim.
Ideal: Clear online or phone process requiring minimal effort or paperwork.
Confidence —
HIGH
2 sources
40.0%
(W 10%)
PRO
Clear instructions to obtain service via Casio Service Center or retailer; phone numbers provided.
CON
Customer must provide proof of purchase and ship the product (postage paid) for service.No dedicated online claim portal specified in the warranty card.
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Cost
Direct costs to the customer for warranty service.
Ideal: No cost to the customer, including free shipping and parts.
Confidence —
HIGH
1 sources
40.0%
(W 10%)
DATA
Parts & labor $0; customer pays shipping/insurance
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Exclusions
Limitations or carve-outs in warranty terms.
Ideal: Few or no exclusions; coverage applies to all core components.
Confidence —
HIGH
2 sources
30.0%
(W 10%)
PRO
Covers manufacturing defects during the warranty period.
CON
Excludes battery, band, case, and glass; excludes damage from misuse, unauthorized repair, or natural calamity.Warranty valid only in country of purchase.
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Transparency
Clarity and accessibility of warranty wording.
Ideal: Plain-language warranty document published openly online.
Confidence —
HIGH
2 sources
80.0%
(W 10%)
PRO
Warranty card is publicly accessible online with clear plain-language terms.Official Casio warranty page summarizes coverage and limitations.
CON
—
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Transferability
Whether warranty transfers to subsequent owners.
Ideal: Warranty fully transferable between owners with no loss of coverage.
Confidence —
HIGH
1 sources
10.0%
(W 10%)
DATA
Not transferable (applies to original purchaser)
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Case Material Hardness
Resistance of the watch case to scratches, dents, and daily wear.
Ideal: High-grade stainless steel, titanium, or ceramic with proven scratch resistance ≥1200 HV.
Confidence —
MEDIUM
2 sources
40.0%
(W 25%)
DATA
Stainless steel case (hardness not specified)
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Crystal Scratch Resistance
Ability of the watch glass to resist scratches and impacts.
Ideal: Sapphire crystal or equivalent hardness ≥9 on the Mohs scale.
Confidence —
MEDIUM
2 sources
50.0%
(W 25%)
DATA
Mineral crystal (~5–6 Mohs)
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Water Resistance Rating
Depth pressure the watch can withstand without water ingress.
Ideal: ≥100 m (10 ATM) water resistance for everyday and sport use.
Confidence —
HIGH
2 sources
90.0%
(W 20%)
DATA
200 m (20 ATM)
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Movement Lifespan
Expected operational life of the internal movement before major servicing.
Ideal: Mechanical or quartz movement rated for ≥10 years before overhaul.
Confidence —
LOW
0 sources
0.0%
(W 30%)
DATA
—
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Serviceability of Movement
Ease of accessing and servicing the movement for cleaning or part replacement.
Ideal: Standardized or modular movement with published service guides and compatible tools.
Confidence —
MEDIUM
3 sources
60.0%
(W 30%)
PRO
Screw-lock caseback provides access to the quartz module for service.Uses Casio Module 2784, a common quartz module referenced by multiple parts/battery sources.
CON
No official service guide for the specific model is provided publicly; servicing typically limited to battery/gasket changes.Maintaining water resistance after opening may require professional pressure testing.
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Spare Parts Availability
Availability of genuine replacement parts such as crystals, gaskets, and crowns.
Ideal: Manufacturer or third-party suppliers offer all critical parts for ≥10 years after production.
Confidence —
MEDIUM
3 sources
55.0%
(W 35%)
PRO
Genuine replacement resin bands and spring bars are available from third-party Casio parts suppliers.Compatible batteries (SR626SW/377) are widely available.
CON
Limited public access to model-specific internal parts (e.g., crown, bezel) outside authorized service channels.
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Battery or Power Source Replacement
Ease and cost of replacing or recharging the power source.
Ideal: User-replaceable battery or self-winding mechanism with accessible servicing instructions.
Confidence —
MEDIUM
4 sources
65.0%
(W 20%)
PRO
Uses SR626SW/377 silver-oxide cell; multiple guides and videos demonstrate straightforward DIY replacement.Approximate battery life of 3 years is documented for Module 2784.
CON
Requires caseback tool and care with gasket to preserve water resistance; professional pressure test recommended.DIY replacement may void water resistance if not resealed/tested properly.
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Strap and Lug Compatibility
Ease of replacing or upgrading the watch strap or bracelet.
Ideal: Standard lug widths (18–22 mm) with tool-free spring bars or quick-release pins.
Confidence —
HIGH
2 sources
90.0%
(W 15%)
DATA
22 mm lug width
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Timekeeping Accuracy
Precision of timekeeping under normal conditions.
Ideal: Accuracy within ±15 seconds/month (quartz) or ±5 seconds/day (mechanical).
Confidence —
MEDIUM
2 sources
75.0%
(W 35%)
DATA
±20 seconds/month (quartz)
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Power Reserve Duration
Time the watch runs from full charge or winding until stopping.
Ideal: ≥48 hours for mechanical; ≥2 years for quartz battery life.
Confidence —
MEDIUM
3 sources
90.0%
(W 25%)
DATA
3 years (battery life, quartz)
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Legibility and Illumination
Ease of reading time in various lighting conditions.
Ideal: High-contrast dial with luminous markers or backlight functional in low light.
Confidence —
MEDIUM
1 sources
70.0%
(W 20%)
PRO
High-contrast dial with large applied hour markers and luminous hands/indices.Lume pip on bezel at 12 and generally decent lume for the price, aiding low-light reading.
CON
Mineral crystal without stated anti-reflective coating; lume performance is described as decent rather than strong.
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Magnetic and Shock Resistance
Ability to maintain accuracy under physical or magnetic stress.
Ideal: Antimagnetic protection ≥4800 A/m and compliance with ISO 1413 shock standards.
Confidence —
LOW
0 sources
0.0%
(W 20%)
DATA
—
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See details on our Scoring Method.
We treat the Buy-It-For-Life (r/BuyItForLife) community as honorary curators. We read, learn, and link back. Your experiences inspire where we look; we run every product through the same process—evidence search, extraction, and scoring—before we feature it. Don’t want your post shown? Tell us and we’ll remove it.
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Proudly Canadian since 1992, Halifax Watch Company is your trusted source for expert watch sales and service. Locally owned and operated, we offer fast, professional 10.00 watch battery replacements while you wait. Explore our online store for top brands like Seiko, Citizen, Bulova, Raymond Weil…
This movement is produced by Casio. The mechanism is quartz and is powered by a Renata R377 377 / SR626SW / SG4 Battery battery. This battery can last up to a maximum of 36 months. The display of this movement is Analog.
This movement is produced by Casio. The mechanism is quartz and is powered by a Renata R377 377 / SR626SW / SG4 Battery battery. This battery can last up to a maximum of 36 months. The display of this movement is analog.
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
Casio's flagship classic diver gets a (quirky?) stainless steel bracelet.
Looking for a battery to your 2784 Module Casio Watch? We know what type of battery your casio watch supports. It is SR626SW type for 2784 module.
Year of release (first appeared): 2011 Module Number: 2784 Battery type: SR621SW Technical specs of DURO MDV-106 Case: Stainless Steel Accuracy per month: 20 sec Battery Type: SR621SW Battery Life: 3 YRS Accuracy: 20 seconds per month Approx. battery life 3 years on SR621SW Date display Regul…
Experience a hassle-free CASIO USA warranty claim process! Our simple 3-Step process ensures quick and easy CASIO USA warranty claims.
Aug 7, 2023 ... Some of them are extremely valuable but I must say that the Casio MDV-106 Duro is the best value for money diver watch in the world IMO I have 5 ...
Nov 9, 2019 ... Just another Casio MDV 106 thread (renamed). Looking for this model and following Ebay and other places I can't ...
Timepiece Warranty-CASIO Limited Warranty. THIS WARRANTY CARD IS VALID ONLY ... NEITHER THIS WARRANTY NOR ANY OTHER WARRANTY OR GUARANTEE, EXPRESS OR ...
Aug 11, 2021 ... ... care. Great watch ... Even if you have a fancy Swiss real diver's watch, you would do well to take a look at the 50 Casio MDV-106 Duro.
This is my second MUDMASTER watch, but my first bluetooth Casio watch. I love the ability to log my walks and hikes using Mission log! The watch fits perfect on ...
Jun 25, 2025 ... plastic · quartz · solar powered. Previous Post Casio MDV-106 Duro Review – Diving Into The Hype. Next Post ...
Jun 23, 2025 ... The Casio MDV-106 Duro is one of two affordable dive watches that will ensure that you gain proper respect from other 'proper' watch ...
Mar 26, 2016 ... Dive watches are some of the most popular. The appeal is simple: a reliable, durable watch with an sense of adventure. The Casio MDV-106 is ...
Check out our casio marlin selection for the very best in unique or custom, handmade pieces from our men's wrist watches shops.
Jan 25, 2023 ... The Casio Duro is a great choice. The thing to remember is it's a proper dive watch, other watches at that price point are "Diver Style" so look ...
Jun 9, 2025 ... These models offer G-Shock-level durability in traditional analog format at budget pricing. Casio MDV-106 “Duro” ( 35-50): Arguably the best ...
Oct 15, 2023 ... Stainless steel must contain at least 10.5 % chromium. I don't know much about steel manufacturing, so I don't know how much Casio's ...
User's Guide. ... 2022 CASIO COMPUTER CO., LTD. Top of page.
Apr 17, 2021 ... I just picked up a casio duro with the green bezel for 11 US dollars at Walmart. It was practically free!
Corporate. Corporate TOP · Privacy Policy · Cookie Policy · Terms of Use · Global. 2025 CASIO COMPUTER CO., LTD. Select a location. View all available ...
Aug 29, 2019 ... Casio Duro MDV-106 Watch Review. The Casio Duro is another one of those watches that I see EVERYWHERE. Across forums, social media, Facebook ...
Aug 4, 2024 ... Hi everyone, I've recently noticed an issue with my Casio MDV-106 Duro quartz watch that I'm curious about.
Jan 17, 2021 ... Reviews · Marrin Dec 20, 2020 · Casio MDV-106 Duro review. This week a review of one of the most affordable dive watches ever, the Casio MDV-106 ...
The actual appearance of the product may be different from that shown in the illustrations in this. User's Guide. ... use a CASIO smart device app. Connecting ...
Warranties; CASIO WATCH SERVICE ASSURANCE. CASIO WATCH SERVICE ASSURANCE. Your Casio watch carries a limited warranty of twenty four (24) months from the date ...
| Created | 2025-10-24 | COMPLETE |
| Updated | 2025-10-30 | COMPLETE |
| Published | — | PUBLISHED |
| Scored | 2025-10-28 | COMPLETE |
| 2025-10-30 | UPDATED |
| 2025-10-28 | UPDATED |
| 2025-10-27 | UPDATED |
| 2025-10-25 | UPDATED |
| 2025-10-24 | UPDATED |
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