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: Plastic Color: Black Interface: DC, RCA (optional) Input Voltage: DC5V Ouput Voltage: 4.2-12V Charging Time: 4h Working Time: Normal use 4-8h Battery: Lithium battery, 1400mAh (included) Item Size: 84 * 32mm / 3.31 * 1.26in Package Weight: 162g / 5.71ounces Package Size: 115 * 115 * 45mm / 4.53 * 4.53 * 1.77in Note: Do not use charger higher than 5V. Packing List: 1 * Wireless Power 1 * Power Cable