Model guide · Reviewed
G-SHOCK DW-6900: Size, Battery Life, Water Resistance & Specs
Short answer
The G-SHOCK DW-6900 is Casio's round digital G-SHOCK with three small windows across the top of its display, at 53.2 × 50 × 18.7 mm and 67 g.
- Thickness
- 18.7 mm
- Weight
- 67 g (2.4 oz)
- Water resistance
- 200 m / 20 bar
- Power
- 2-year battery
The DW-6900 arrived in 1995 and became one of the most recognizable G-SHOCK shapes: a round resin case, three small graphic windows and a large front light button. It is a simple battery-powered digital watch rated to 200 m. Battery life depends on the module inside: about two years on module 3230, and about five years on module 3529 with its LED backlight. Its wide, curved bezel is why it is a favorite for sculpted and iced-out custom bezels.
DW-6900 specifications
Casio's specifications for the stock DW6900-1V. Custom builds can differ; see the notes below.
| Reference | DW6900-1V |
|---|---|
| Module | 3230, 3529 |
| Display | Digital |
| Shape | Rounded, three-window |
| Case size (L × W × H) | 53.2 × 50 × 18.7 mm (2.09 × 1.97 × 0.74 in) |
| Weight | 67 g (2.4 oz) |
| Case | Resin |
| Band | Resin |
| Water resistance | 200 m (660 ft, 20 bar) |
| Power | Battery: CR2016, about 2 years |
| Tough Solar | No |
| Multi-Band 6 (atomic time) | No |
| Bluetooth | No |
| Light | Backlight (EL on module 3230, LED on module 3529) |
| Launched | 1995; module 3230 (2011); module 3529 (2023) |
| Casio U.S. list price | $99.95 |
Newer module 3529 watches, introduced in May 2023, have an LED backlight and are rated about 5 years (G-Central). Check the module number on the case back.
What is the G-SHOCK DW-6900?
The G-SHOCK DW-6900 is Casio's round digital G-SHOCK, launched in 1995, with three small windows across the top of the display and a large light button on the front. It is a battery-powered watch with a resin case and band.
How big is the DW-6900?
The DW-6900 measures 53.2 × 50 × 18.7 mm and weighs 67 g, according to G-Central's record of Casio's specification. That is about 2.1 × 2.0 × 0.74 inches and 2.4 oz, which is larger and thicker than the square DW-5600.
What battery does the DW-6900 use, and how long does it last?
The DW-6900 uses one CR2016 lithium battery. Casio rates it at about 2 years on module 3230, assuming 3.5 seconds of backlight and 20 seconds of alarm a day; watches with the newer module 3529 are rated at about 5 years.
Is the DW-6900 waterproof?
The stock DW-6900 is rated 200 m (20 bar) water resistant, so swimming and showering are fine. It is not an ISO-certified dive watch, and on a custom build a swapped bezel or case can affect sealing, so confirm the specific piece with us before you swim.
What module does the DW-6900 use?
The DW-6900 uses module 3230, or module 3529 on watches made since May 2023. The module number is in a box on the case back, and it decides which Casio operation guide applies.
What features does the DW-6900 have?
The DW-6900 has a 1/100-second stopwatch, a countdown timer with auto-repeat, a multi-function alarm, an hourly time signal, a backlight with flash alert and a 12/24-hour display. It has no solar charging, atomic timekeeping or Bluetooth.
What is the difference between the DW-6900 and the GW-6900?
The DW-6900 runs on a battery; the GW-6900 has the same round shape with Tough Solar charging and Multi-Band 6 atomic timekeeping. The two are different models, so check with us before fitting a DW-6900 bezel to a GW-6900.
How much does a DW-6900 cost?
The stock DW-6900 (DW6900-1V) has a Casio U.S. list price of $99.95, as recorded by G-Central. A custom bezel for it is sold separately.
Can you put a custom bezel on a DW-6900?
Yes, the DW-6900 can take a custom bezel, because its bezel is a separate part held on by small screws. It can be swapped for an aftermarket metal or moissanite bezel made for the DW-6900 case, and the watch underneath is unchanged.
Is the DW-6900 right for you?
The DW-6900 suits
- Anyone who wants the bold round G-SHOCK look in a simple, affordable digital watch.
- Customizers: the wide bezel suits spike, rope, claw and fully iced designs.
Look elsewhere if
- People who never want to change a battery — the GW-6900 is the solar, atomic version of the shape.
- Small wrists that want a slim watch — at 18.7 mm it is much thicker than the 11.8 mm GA-2100.
Custom DW-6900 builds: what changes
- Our DW-6900 bezels, dials and case sets are aftermarket parts made for the DW-6900 case; the watch is not included.
- Do not assume a DW-6900 bezel fits a GW-6900 or another 6900-series watch. Send us the model number first.
- Custom modifications can affect water resistance; confirm a specific piece with us before swimming.
GshockVendor is an independent store and is not affiliated with Casio. Specs above describe Casio's stock model.
Sources
Figures describe Casio's stock reference model. Independent references are used where Casio's own page could not be read directly, and cross-checked against Casio's published specs.
- G-Central: G-SHOCK DW-6900 specifications (independent reference, accessed November 10, 2026)
- Casio: Operation Guide 3230/3232 (DW-6900) (official Casio, accessed November 10, 2026)
- Casio G-SHOCK (UK): Are G-SHOCK watches waterproof or water resistant? (official Casio, accessed October 25, 2026)
- G-Central: G-SHOCK GW-6900 specifications (independent reference, accessed October 25, 2026)