Feature: Wind Speed: 1-2-3, Neck fan, Low Noise, Rechargeable battery, Big Wind Use time, with Hook, 10.5hours Technical Specification Power: 4W (Max) Battery: Li-ion 18650 3.7V 2000mAh Working time: About 10.5 hours Charing time: About 3 hours Item size: 165*55*60.5mm Net weight: 109g Accessory: Charge cable, Manual 规格： 带登山扣 功率：4W 电池:锂电池18650 3.7V 2000mAh 工作时间:约10.5小时 充电时间:约3小时 产品尺寸：165*55*60.5mm 产品重量: 109g 配件： 充电线，中英文说明书