UNDERSCORE
Connected Watch - UNDERSCORE FITFLEX - 1.43" AMOLED - Bluetooth Calls - IP68 Waterproof
Experience the FITFLEX connected watch by UNDERSCORE, featuring a vibrant 1.43" AMOLED display with 466x466 resolution. Stay connected with Bluetooth calls and notifications, track over 100 sports activities, monitor your health with heart rate, SpO2, and sleep tracking, and enjoy IP68 waterproof protection for robust performance during all your activities. Boasts a 7-day battery life.
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Updated on May 21, 2026
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