[LCD Digital Dc Multimeter] Generic Universal USB Power Multi-meter Voltmeter Ammeter Monitor Test Charging Voltage Current t W Free 5 Inch Type a Male to Female Extension Cable nput Voltage: 3-7V, Input Current: &lt;3.5A, Capacity: 0-19999mAh 3 inch extension cable for better operation; High precision backlit LCD support real-time display Smart little gadget - a necessity for modern tech fellow Easy to read data on LCD display both day and night