Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
KOSPET Tank T4C Black IP69K & 5 ATM water resistance
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Last known price: BYN 504.83 (BYN)
Price source: Rulez BY
Price record dated 11/4/26
Saved price in the source currency; not a current offer. The date refers to the price record, not a stock check.
Features
- IP69K & 5 ATM water resistance
- Built-in GPS & outdoor sensors
- Heart rate & SpO2 monitoring
- Up to 15-day battery life
- 1.5-inch AMOLED always-on display
- Bluetooth calls & voice assistant
- Advanced training metrics & SWOLF
- Sleep, stress & health tracking
- Lightweight 2.14 oz design
- Magnetic charging & flashlight mode
General specs
- Brand: KOSPET
- Model: Tank T4C
- Seller: Rulez BY
- ID: 1377254
- Type: Smart Watch
- Brand: Kospet
- Model: Tank T4C
- First listed by seller: June 17, 2026
You thrive on outdoor challenges and demand a watch that keeps up. The Kospet Tank T4C is your go-to smartwatch for rugged adventures and serious training. It tracks your runs, swims, and bike sessions with precision while analyzing your recovery time. This insight helps you avoid overtraining and improve safely.
You forget you are wearing a device when the rugged steel body handles rain, mud, and pool laps. The 1.5-inch AMOLED screen stays bright at 1000 nits, so your workout stats remain clear even under direct sun. Your heart rate and blood oxygen level update constantly, and the built-in GPS maps your route without your phone. After a tough set, the Training Status metric confirms if you strengthened your fitness or need rest.
Beyond training, the watch manages your calls and notifications directly from your wrist. You check messages, control music, and use the voice assistant while keeping your phone pocketed. Sleep tracking and stress monitoring help you balance recovery. The long battery life supports multiple workout sessions per week, and the replaceable strap adapts to your style. This watch becomes your reliable partner, giving you data that empowers smarter decisions in every pursuit.
When this device makes sense
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