Rechargeable Battery fan

Battery: 4V 1600mAh\r\n\r\nRechargeable Battery\r\n\r\n5VUSB Charge time: 5-6hrs\r\n\r\nDuration:2-2.5hrs/high speed2.5-3hrs/low speed6-8hrs/strong\r\n\r\nLight\r\n\r\nDiameter: 18cm\r\n\r\nUnfold Height: 45cm\r\n\r\nFolding Height: 15cm\r\n\r\nPower Bank Output: 5V/0.6A