Check the listing for details. 12V Digital LED Display Voltmeter Voltage Gauge Panel Meter Car Motorcycle. Condition: New. Listed at 6.99 USD. Welcome to Kumbala eBay Store Description: - 100% brand new and high quality - LED indicator light: blue LED ambient light, convenient to plug in charging cable - Dual USB ports total 4.2A. Each 2.1A 2 USB Ports - Battery Voltage and Current Display : Display the voltage of Car battery while no charging - Display charging current when phone is charging. Let you always keep battery state of health - Built In LED Voltmeter For Battery Health Monitoring - LED turns on when plugged into a power source - Current Display, Over-charge Protection - Display the current detected by Intelligent circuitry while charging - Intelligent circuit design protects against short circuiting, over-heating, over-currents, and over-charging - Wide Compatibility, suitable for most phones/tablet pc/navigator/PDA/MP3/MP4 and many more - Overcharge Protection For Charging Safety Specification: - Material: Aluminum alloy+Plastic - Input Voltage: DC12V-24V - Output Voltage: 5V - Output Power: 120W - Output Current: 3100mA max - Work Temperature: 0~40℃ - Size: 33*59mm - Color: Gold, Silver, Blue, Red, Black Included in this package: - 1X Voltemter Warranty & Customer Service: 30 days money back 60 days seller's guarantee, 24 Hours friendly customer service!