Xiaomi Black Shark GT

Display: 1.78 inch AMOLED Display
Resolution: 368*448 pixel
Brightness: up to 450 nits, adjustable
Memory
RAM: <128MB
ROM: <128MB
Battery: Capacity: 220-300mah
15 Days Battery Life
Connectivity: Bluetooth 5.2
Material: Aluminum Alloy Frame + 1 Button
OS: Android5.0/iOS11.0 and above
SpecialFeatures
100+ Sports Modes
150+ Watch Faces
IP68 water resistance
Supports Bluetooth Call
Sensor: 
Heart Rate Monitor,Blood Oxygen Monitor,Sleep Monitor
Health monitor: Passometer, fitness tracker, sleep tracker, Message Reminder, Call Reminder, Alarm Clock, Heart Rate Tracker