Feature1, LED display, placing neck/handheld/desktop,2, five velocity wind adjustment, 90° adjustable,3, Dual batteries for lengthy battery life, can help mobile phones: ABS+PP+electronic componentsSingle cyber web weight: 175gProduct size: 18*9*4/7*3*1 voltage: DC5VBattery capacity: 1800mABattery voltage: 3 time: about 3 hours