The Casio G-SHOCK GMW-B5000PB-6 Twilight Tokyo is a 2021 full-metal square watch distinguished by its purple and blue-gray ion-plated finish. It pairs the classic 5000-series shape with Tough Solar, Multi Band 6 radio timekeeping and Bluetooth smartphone connectivity. Casio Japan now marks the model production complete, so current stock and resale prices depend on the market.
What is the GMW-B5000PB-6 Twilight Tokyo?
Introduced in 2021, the GMW-B5000PB-6 is a full-metal member of G-SHOCK’s 5000 line. Its design descends from the original square DW-5000C and is based on the metal GMW-B5000D. The Japan-market reference is GMW-B5000PB-6JF; international product pages use GMW-B5000PB-6.
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Casio describes the color concept as inspired by Tokyo at twilight, when light and darkness interplay. The bezel and bracelet combine purple and blue-gray ion plating, with hairline and mirror finishing on the case and bracelet. A negative-mode LCD and small purple, orange and light-blue accents echo city lights and the changing sky. This is a color-and-finish variation within the metal square line, rather than a different case shape or movement platform.
GMW-B5000PB-6 specifications
| Specification | Detail |
|---|---|
| Case and dimensions | Stainless steel; 49.3 × 43.2 × 13.0 mm |
| Weight | Approximately 167 g |
| Construction | Shock resistant |
| Water resistance | 20 bar / 200 m |
| Power | Tough Solar |
| Timekeeping | Multi Band 6 radio-controlled timekeeping and Bluetooth smartphone link |
| World time | Five selected cities from 39 time zones; smartphone functions can expand city selection |
| Stopwatch | 1/100-second capability during the first minute, then 1-second resolution; 24-hour measuring capacity |
| Countdown timer | One-second unit; maximum 24 hours |
| Alarms | Five daily alarms, including one snooze alarm |
| Lighting | Full-auto LED backlight (Super Illuminator) |
| Published operating time | About 22 months with power saving enabled after a full charge, according to Casio’s international announcement |
How the Twilight Tokyo compares with other full-metal G-SHOCK squares
When comparing it with another GMW-B5000, separate the distinctive finish from the shared practical questions. The Twilight Tokyo’s defining difference is the purple and blue-gray ion plating and its contrasting dial accents. For everyday fit, its published dimensions are 49.3 × 43.2 × 13.0 mm and its weight is approximately 167 g; compare those figures with the specific alternative rather than assuming all metal squares wear identically.
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- Iconic G-SHOCK Square Design – The legendary square case that started it all, delivering timeless style and the rugged durability G-SHOCK is known for.
- Shock Resistant & 200M Water Resistant – Built to withstand impacts, swimming, snorkeling, and demanding everyday use.
- Super Illuminator LED Backlight – Bright white LED with afterglow ensures excellent readability in low-light conditions.
- Essential Digital Features – Includes 1/100-second stopwatch, 24-hour countdown timer, multi-function alarm, flash alert, and full auto-calendar.
- Reliable 5-Year Battery Life – Powered by a CR2016 battery for long-lasting performance with minimal maintenance.
- Color and finish: Decide whether the Twilight Tokyo’s two-tone purple and blue-gray treatment suits you better than another model’s finish.
- Functions: Check the exact model listing for Tough Solar, Multi Band 6 and Bluetooth support rather than relying on the family name alone.
- Durability: The PB-6 is shock resistant and rated to 20 bar / 200 m. Compare the published rating and construction of the alternative model.
- Price and purchase terms: Compare current seller pricing, condition, import costs and warranty access—not just the original launch price.
- Production status: Consider whether the alternative is currently offered through authorized channels, especially if warranty coverage matters.
Launch price and current availability
Casio Japan records a September 2021 release and a manufacturer suggested retail price of ¥82,500 including tax for the Japan-market watch. Launch timing and price varied by market: Casio Singapore announced availability from September 24, 2021 for CASIO ID members, while Casio Taiwan described a September 18 release at a suggested NT$20,000.
Casio Japan currently labels the listing “生産完了,” meaning production complete. That does not establish whether a particular retailer has remaining stock. Availability, resale price, import charges and warranty coverage are volatile and region-specific; verify the seller, location, condition and applicable warranty before buying. For an authorized route, use the relevant Casio or G-SHOCK dealer search for your market.
Quick Recap
Best Value
- Case size (L× W× H): 48.9 × 42.8 × 13.4 mm
- Case and bezel material: Resin / Bio-based resin
- Construction: Shock Resistant | Band: Bio-based resin band
- Weight: 52 g
- Water resistance: 200-meter water resistance
Rank #4
Rank #3
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- Shock resistant structure protects against impact
- 200 meters water resistance for swimming and snorkeling
- Solar-powered battery charges itself from any light source
- Atomic timekeeping syncs to radio towers for precise accuracy
- LED backlight illuminates the digital display in low light
Rank #2
- Approx. battery life: 2 years on CR2032
- 200-meter water resistance
- LED backlight (Super illuminator); Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
- Display of distance, speed, pace, and other calculated values based on accelerometer, auto/manual lap times, Auto Pause, target alert setting (time, altitude, calories burned) on/off, training display customization (elapsed time, distance, pace, lap time, lap distance lap pace, average pace, speed, average speed, calories burned)
- Training Function
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
