The wireless power has long battery life, easy to connect with motor machine for worry-free work.Features:The battery capacity is 1400mAh, which can last for about 8 hours, with a long battery life and worry-free work.Not easy to fall off, safer to use.Weighs only 66g, light and compact.Wireless power bank, easy to carry.Easy to operate, connect with motor machine.Specifications:Material: PlasticColor: BlackInterface: DC, RCA (optional)Input Voltage: DC5VOuput Voltage: 4.2-12VCharging Time: 4hWorking Time: Normal use 4-8hBattery: Lithium battery, 1400mAh (included)Item Size: 84 * 32mm / 3.31 * 1.26inPackage Weight: 162g / 5.71ouncesPackage Size: 115 * 115 * 45mm / 4.53 * 4.53 * 1.77inNote:Do not use charger higher than 5V.Packing List:1 * Wireless Power1 * Power Cable