Fitbit Charge 2, Wristband activity tracker, OLED, Waterproof, Black
Fitbit Charge 2. Display type: OLED. Device type: Wristband activity tracker, Product color: Black, Stainless steel, Housing material: Stainless steel. Memory capacity: 7 day(s). Bluetooth version: 4.0 LE. Battery life: 5 day(s), Battery technology: Lithium Polymer (LiPo), Charging time: 2 h