Bluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call ReminderBluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call ReminderBluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call ReminderBluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call ReminderBluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call ReminderBluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call Reminder

Bluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker Bracelet For Android IOS NFC Call Reminder

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Product Description

Bluetooth Smart Wristband D21 Sport Smartband Heart Rate Pedometer Fitness Tracker

Bracelet For Android IOS NFC Call Reminder

  • Model:D21 Heart Rate Smart Bracelet.
  • Function:Heart rate monitor, Pedometer, Sleep monitor, sedentary reminder, call remind, sms alert, alarm, sliding touch, long standy,ultrafast charge,etc.
  • Built-in NFC chip: It can automatically transmit within 5cm response distance, fast swiping and replace the bus / metro card
  • 0.66 inch OLED touch screen for information watching: see call notifications, daily stats and time
  • G-sensor: adopts the newest flexible sensitive technology, the screen will light on when rotate wrist
  • Green light heart rate sensor: make accurate analysis of the hemokinesis situation with green LED light sensor
  • Health fitness tracker: monitor your activity levels, track walking distance and calculate calories burned, achieve the daily exercise targets you set and work towards a healthier lifestyle
  • 80mAh li-polymer battery: long standby time, normal working time is up to 3-5 days
  • Light Weight, touch design, easy to operate
  • Syncs via Bluetooth with iOS and Android
  • IP66 life-level waterproof​

Time Display Support
Date Display Support
Steps Display Support
Distance Display Support
Calorie Consuming Display Support
Calling Reminder Support
Message Reminder Support
Sitting Alert Support
Photo-taking Control Not Support
Music Control Not Support
Sleeping Monitoring Support
Bluetooth Connect Support
Battery-charging Protection Support
Keypad Not Support
Anti-lost of Phone Not Support
Heart Rate Monitoring Support

Main Chipset NRF51822
Sensor Triaxial Gravity Sensor
Languages Chinese, English
OS support : Android4.4 or higher, iOS 7.0 or higher
LCD 0.66″OLED
LCD Pixels 0.66″ 64*48
BT Version Bluetooth 4.0
BT Connection Distance 8-12m
Battery Capacity: 80mAh
Standby Time 7 days
Charging Electric Current 200mA
Charging Type: Touching Point Charging(Clip Charger)
Average Working Current 6mAh
Average Standby Current: Less than 40uA
Working Voltage: 3.7V
Working Temperature: -20~70
Woriking Humidity 5%~95% non-congealable
Dimension 23.7*12.2*(164~232mm)
Colors: Black, Pink, White, Purple
Main Body Material PC
Watchband Material Silica Gel
Net Weight 28g
Waterproof Grade IPX65

1 x D21 Smart Band

1 x User Manual

1 x Charge Cable

USD 28.59-29.39/pieceUSD 30.60/pieceUSD 29.39-29.69/pieceUSD 37.69-38.76/pieceUSD 29.99/pieceUSD 69.89/pieceUSD 30.97-40.60/pieceUSD 33.97-41.23/piece

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Item Specifics

Brand Name: 
 teamyo
Language: 
 English
Compatibility: 
 All Compatible
Function: 
 Passometer,Call Reminder,Message Reminder,Sleep Tracker,Fitness Tracker,Remote Control,Other
Type: 
 On Wrist
Application Age Group: 
 Adult
Model: 
 D21 Smart Band
Heart Rate Monitor: 
 Green LED Heart Rate Sensor
Smart Bracelet Display: 
 0.66 inch OLED
MCU Chipset: 
 nRF51822 Smartband
Smart Band Reminder: 
 SMS and Call Reminder
Compatibility: 
 Smart Bracelet for Android and iOS
Smart Wrsitband Battery: 
 80mAH Li-Poly Battery
Color: 
 Black,Pink,Purple,White
Standby Time: 
 About 5-7 days
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