'official website link https://www.do-smarter.com/ Easy to Charge: With built-in USB plug, simply insert it into USB port of computer or portable power bank, etc. No extra cable hassle. 1.Find a charging icon on the backside of band. Hidden inside the band is a convenient USB plug. Grip the tracker in one hand and the band in the other. The band arms will pull away from the tracker body and expose the USB charging plug. 2.Remove the band with charging icon. 3.Plug with metal strips to connect with USB charger or computer. If plug upside down, it won\'t charge. 4. A charging icon comes on once plug in right way. After 2 hours activity tracker will be fully charging. Please do not charge device overnight, that may cause battery damage.'
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