1, LED display, hanging neck/handheld/desktop,2, 5 speed wind adjustment, 90 ° adjustable,3, Dual batteries for long battery life, can support mobile phones. SpecificationMaterial: ABS+PP+electronic componentsSingle net weight: 175gProduct size: 18. 8*9*4. 65cm/7.. 4*3. 54*1. 83inInput voltage: DC5VBattery capacity: 1800mABattery voltage: 3. 7VUse time: about 3. 5-7 hours