Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
If you are interested in more details, you can find full information on the seller's page.
You venture deep into the backcountry where phone signals fail and conditions turn harsh. The Kospet Tank T4 is built for that reality. Its stainless steel body, IP69K dust protection, and MIL-STD-810H shock resistance mean you focus on the trail, not on your gear. This rugged smartwatch tracks your location with GPS and monitors your heart rate, blood oxygen, and skin temperature, giving you critical data at a glance.
The 1.43-inch AMOLED display stays clear under direct sun. Before a storm breaks, the barometer alerts you to pressure changes. After a swim, the depth gauge logs your dive. You store thousands of songs on the 32GB drive and pair Bluetooth headphones, leaving your phone safe in your pack. A magnetic charger snaps on quickly for up to 15 days of battery life. You get real-time workout analysis, from VO2 max to training load, without the complexity of a multisport watch.
| This item | Recommendations | |||||
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KOSPET Tank T4 Silver 1.43-inch always-on AMOLED display
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KOSPET Tank M4 Black AMOLED Always-On Display
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KOSPET M4 Silver 1.96-inch AMOLED Always-on Display
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KOSPET Tank T4C Black IP69K & 5 ATM water resistance
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KOSPET Tank M4C Black IP69K dust/water/shock resistance
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Black Shark GS3 green 1.43-inch AMOLED display
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| Brand | KOSPET | KOSPET | KOSPET | KOSPET | KOSPET | Black Shark |
| Model | Tank T4 | Tank M4 | M4 | Tank T4C | Tank M4C | GS3 |
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| Price | BYN 578.42 | BYN 574.64 | BYN 701.27 | BYN 504.83 | BYN 504.83 | BYN 224.64 |
| Seller | Rulez BY | Rulez BY | Rulez BY | Rulez BY | Rulez BY | Rulez BY |
| Update | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 |
| Product Code | 3655803 | 3655784 | 3655800 | 3656086 | ||
| Type | Smartwatch | Smart watch | Smart Watch | |||
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