Garmin vívosmart 4 OLED Wristband activity tracker Black 1 x 16 3840 x 2160 Display resolution 3840 x 2160 Display resolution 3840 x 2160 pixels Response time 14 ms Display diagonal 68 25" FULL HD DISPLAY The 25 inch display on the XG251G is built for esports and competitive play 5 mm Width 15 mm Weight 20 Performance Touchscreen Yes Display resolution 48 x 128 pixels Display type OLED Design Control type Sensor Waterproof up to 50 m Waterproof Yes Adjustable Yes Band size L Band material Silicone Band colour Black Housing material Aluminium Product colour Black Device type Wristband activity tracker Features Memory capacity 14 day(s) Alarm clock Yes Timer Yes SMS notifications Yes Date indication Yes Stopwatch Yes Call notifications Yes Camera shutter function Yes Barometer Yes Accelerometer Yes Workout tracking Yes Personal goals Yes Quality of sleep Yes Floors climbed Yes Pedometer Yes Distance travelled Yes Calories burned Yes Active minutes Yes Heart rate monitor Yes Ports & interfaces Wi Fi No Bluetooth Yes Power Battery life 7 day(s) Weight & dimensions Height 188 mm Depth 10