Yosoo- Xbox Battery Charger, 2Pcs USB Wireless Controller Battery Charging Dock Station for Xbox 360 -Black-

Specifications: Color: Black, White (Optional) Material: ABS Input : 5V Output : 3V 300mA Compatibility: for Xbox 360 Size: Approx. 8.5 * 5 * 3 cm / 3.3 * 2 * 1.2 in Package Weight: About 40g   Package Included:   1 x USB Charging Dock for Xbox 360   Note: 1. When charging, indicator light turns red, turn green if fully charged. 2. When charging, the controller requires electric energy to vibrate, so the indicator may convert between red and green color. 3. It will start to charge only if the battery power is lower than a certain value.