Aluminum Alloy USB Charging Dock Bracket Charging Cradle Stand for Fitbit Inspire/Inspire HR/Ace2 Smart Bracelet - Silver Aluminum build delivers a minimal and sleek design Convenient stand holds device for a comfortable viewing angle Easy to use, just connect the USB to a PC to get your SmartWatch charged Note: It takes 2.5 hours to fully charge and supports fast charging. Pay attention to charging in time before the device is completely dead It is recommended to charge directly through a laptop USB port or a computer USB port, the voltage is more stable Specification: Input voltage: 5V Output voltage: 5V Output current: 700MA Compatible with: Fitbit Inspire Fitbit Inspire HR Fitbit Ace2 Package included: 1 x Aluminum Alloy USB Charging Dock