Amazfit GTS 4 Smartwatch

Display: 1.75′′ AMOLED (390 × 450 resolution) Design: Slim aluminum body, only about 27 g Water Resistance: 5 ATM (good for swimming) Sports Modes: 150+ workout modes GPS: Dual-band GPS with multiple satellite systems Health Tracking: Heart rate, SpO2, sleep, stress monitoring Bluetooth Calling: Yes (built-in mic & speaker) Battery: Up to 8 days typical use OS: Zepp OS with mini apps & watch faces