Amazfit GTS 4 - Infinite Black

1.75 (390x450) AMOLED, Always-On Display, Aluminum alloy + Plastic body, 9.9mm thin, 27g lightweight, BioTrackerTM 4 PPG (4PD + 2 LED), acceleration sensor, gyroscope, geomagnetic sensor, air pressure sensor, ambient light sensor, Dual-band positioning...