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Black Twist


  • Free shipping (orders over $50)
  • 60-day money-back guarantee
  • One-year limited warranty

Specs & Details

In The Box
  • UP4™ Band
  • Quick Start Guide
  • USB Charging Cable
Materials & Care
  • Strap: Medical-grade hypoallergenic TPU rubber
  • Casing: Anodized aluminum with less than 0.5% nickel
  • Sensing Electrodes: TiN coated stainless steel
  • Splash-proof
UP4 Dimensions & Weight
  • Size: 220mm x 12.2mm x 3.0mm-9.3mm
  • One size fits most, wrist sizes ranging 140mm–190mm
  • Weight: 29g
Power & Battery
  • Battery life: Up to 7 days
  • Rechargeable Lithium-Ion Polymer, 38 mAh Battery
  • Charge time approximately 60 minutes via magnetic USB charging cable
Sensor & Interface
  • Bluetooth® 4.0 BLE
  • Tri-axis accelerometer
  • Bio-impedance:
    • Heart rate
    • Respiration
    • Galvanic Skin Response (GSR)
  • Three single color LEDs: Blue for sleep, orange for activity, and white for notifications

*An "eligible American Express® Card" for the UP4™ band means an American Express U.S. Consumer or Small Business credit or charge Card that is not cancelled and that is issued to you by a U.S. banking subsidiary of American Express. Prepaid cards and products, American Express Corporate Cards and American Express-branded cards or account numbers issued by other financial institutions are not eligible. Must have a valid User ID at for an eligible Card. Only one Card can be connected to an UP4 band and you cannot switch the Card once it is connected. The ability to use your UP4 band to make payments expires as early as 7/31/2019. Works where Amex contactless payments are accepted in the US.

See important terms and limitations at

Customer reviews

UP4 Accessories

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