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D21 Sport Bluetooth Smartwatch Sleep Heart Rate Monitor Health Tracker Bracelet

You save $18.95 (32% off)
OpenSky savings
32% off MSRP
- $18.95
Due to COVID-19, your shipment may be delayed 1-2 weeks

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D21 Sport Bluetooth Smartwatch Sleep Heart Rate Monitor Health Tracker Bracelet

  • Built-in chip type: NRF51822
  • Bluetooth version: Bluetooth 4.0
  • Waterproof: Yes
  • IP rating: Life water resistance


  • Bluetooth calling: Phone call reminder
  • Messaging: Message reminder
  • Health tracker: Heart rate monitor,Pedometer,Sedentary reminder,Sleep monitor
  • Alert type: Ring,Vibration
  • Other function: Alarm


  • Screen: OLED
  • Screen resolution: 64 x 48
  • Screen size: 0.66 inch
  • Operating mode: Touch Screen


  • Type of battery: Polymer battery
  • Battery Capacity: 80mAh
  • Charging time: About 60mins
  • Standby time: 3-4 days


  • People: Female table,Male table

Dial and Band:

  • Shape of the dial: Rectangle
  • Case material: Stainless Steel
  • Band material: Silicone


  • Compatible OS: Android,IOS
  • Compatability: Android 4.3, iOS 7.0 and above system
  • Language: English,Simplified Chinese,Traditional Chinese
  • Available color: Black,Pink,Purple,White


Weight and Size:

  • Dial size: 4.53 x 2.40 x 1.23 cm / 1.78 x 0.94 x 0.48 inches
  • Band size: 12.50 x 0.95 cm / 4.92 x 0.37 inches
  • Product size (L x W x H): 12.50 x 2.40 x 1.23 cm / 4.92 x 0.94 x 0.48 inches
  • Package size (L x W x H): 15.40 x 8.80 x 3.10 cm / 6.06 x 3.46 x 1.22 inches
  • Product weight: 0.030 kg
  • Package weight: 0.130 kg


Package Contents:

  • 1 x Smart Watch
  • 1 x Chinese and English Manual
  • 1 x Charging Clip

Dimensions :

  • Host size 45.3 * 24 * 12.3

  • Host Material PC

  • Band length 215mm

  • Bracelet Stuff TPU

  • Clasp The nickel copper

  • Strap Installation Replaceable

  • Water level IP66

Package Content:

  • 1PC Bluetooth Smart Watch (without retail package)

  • 1PC USB Cable

  • 1PC  User Manual

Weight (lbs.):0.25
Ships To
Additional Item
Continental United States
This product usually ships in 4 business days and should be delivered in 10 business days.
Shop worry free! If you’re not 100% happy with your purchase, you can exchange or return this item within 14 days of receiving it.

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My package arrived damaged! What should I do?

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