Smart fitness tracker 1.6 inch large touchscreen

Name:Mibro watch T1
Dimension:43.5*35*11.3mm(without heart rate boss)
Band size:Width 20mm,expanded length 248mm
Weight:51g(including strap）
Material:metal+liquid silica gel
Display:1.6 inch Amoled HD touch screen
Speaker:Sanci composite membrane horn(2ATM waterproof)
Microphone:Anti-interference silicon microphone
Battery life:7 days for daily mode,45 days for basic mode
Charging port:Magnetic thimble charging port
Bletooth:Bluetooth V5.0
Sensor:Optical heart rate sensor,SpO2 sensor,accelerometer
Waterproof:2ATM