Feature1, LED display, putting neck/handheld/desktop,2, five speed wind adjustment, 90° adjustable,3, Dual batteries for long battery life, might help cellular phones: ABS+PP+electronic componentsSingle information superhighway weight: 175gProduct size: 18*9*4/7*3*1 voltage: DC5VBattery capacity: 1800mABattery voltage: three time: about 3 hours