Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
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For the outdoor enthusiast who pushes limits, the Black Shark GS3 smartwatch is built to keep up. Whether you're trail running, hiking, or strength training, this rugged companion delivers reliable performance in harsh conditions.
You won't worry about drops or splashes. With IP69K and MIL-STD-810H ratings, the GS3 withstands dust, water, and shocks. The 1.43-inch AMOLED screen (466x466 resolution) stays crisp under direct sunlight, and the 600 nits brightness ensures you can read stats at a glance. GPS locks on quickly before you leave the trailhead, so you track your route accurately.
Battery life reaches 380 hours in typical use, lasting through multi-day trips without recharging. The built-in heart rate monitor and SpO2 sensor give you real-time data on your fitness and recovery. You can take calls directly from your wrist, control your smartphone camera, and pay with NFC. It also tracks sleep, stress, and women's health, making it a comprehensive tool for your active lifestyle.
| This item | Recommendations | |||||
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Black Shark GS3 green 1.43-inch AMOLED display
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KOSPET Tank T4C Silver 1.5-inch AMOLED always-on display
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KOSPET Tank M4C Black IP69K dust/water/shock resistance
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KOSPET Tank M4C 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 T3 Ultra 2 Silver IP69K & MIL-STD-810H Ruggedness
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| Brand | Black Shark | KOSPET | KOSPET | KOSPET | KOSPET | KOSPET |
| Model | GS3 | Tank T4C | Tank M4C | Tank M4C | Tank T4C | Tank T3 Ultra 2 |
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| Price | BYN 224.64 | BYN 504.83 | BYN 504.83 | BYN 525.84 | BYN 504.83 | BYN 330.94 |
| 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 |
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