Model Number: D21-ad10 Key Specifications/Special Features: Key specifications/special features:Chip model: nRF51822 (Cortex M0 16MHz)Memory: 265kAcceleration sensor: three-axis acceleration sensorHeart rate sensor: green light static heart rate sensor
Display: OLED 0.66" 64*48 dots
Motor: cylindrical vibration motor
Key press: touch key
Battery: 80mAh

Function
#Time
1. Battery power display
2. Date display
3. Time display

#Heart rate interface
1. Heart icon, long press the icon to start testing with beating
2. Display the real time heart rate
#Notice: heart rate testing data cannot be used as medical data
Time will a little longer for the first time testing, it is normal

#Bestwearingmanner:
1.Keepafingerwidthbetweenthewristbandandulna
2.Keeptheheartratesensorclingingtoskin

# Pedometer
1.Pedometer icon
2.Display the real time steps

# Distance interface
1.Distance icon
2. Display the whole distance according to the pedometer

# Calories display
1.Calories icon
2.Display the real time calories

# Palmingbrightscreen
1.Longpressthetouchkeytoturnon/offthefunction

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1. Top supplier in China
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4. High quality with global standards
5. Goods must be passed QC and test before shipping out
6. 1 year factory warranty
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