GT01 square smart watches for men women, 2022 hd smartwatch iphone/samsung compatible, 5ATM waterproof fitness watch monitor for heart rate, 14 sports modes, GPS, heart rate, sleep Main Features: High resolution 1.55-inch tft-lcd full touch screen with adjustable brightness. Heart rate, spo2 and sleep tracking. Smart notifications: pair with your smartphone and enable notification alerts in app. Track your sports activity all-day. Long-lasting battery life.