["Description:\n\nFeatures:\nMulti functional product, perfect for travel use,With ON/OFF Power Switch and and cable,Easy to use and save energy.\nReal-Time LED Voltmeter - This switch panels for trucks with large digital voltmeter display that shows 6-30V voltage, you can monitor the condition of the battery on your car or boat that if the voltage is under normal status.\nThis 12V USB socket is built-in dual USB charging ports, two ports output: 5V / 2.1A & 2.1A , suitable for cellphone tablet gps and more deivces.\nWaterproof dust proof material can be used for the interior and exterior application,Install in any 12V-24V motorbike, Boat, Riding mower, tractor or car.\nApply to all USB charging mobile phones or other electronic products. Run multiple accessories at one for time, very convenient and easy to use.\n\nSpecifications: \nItem Type: Dual USB Adapter Charger + 12V Power Plug With LED Voltmeter and on off Switch\nMaterial: ABS + Metal \nHousing Color: Black\nLED Voltage Display: Blue/Red/Green (Optional)\nPanel Size: 9×9cm\n(1) USB Charger: \nOperating voltage: 12V-24V \nInterface: 2 USB\nOutput: for DC 5V 2.1A\nIndicator: Blue LED \n(2) Voltage Meter: \nOperating Range: for DC 6-30V \n- Widely used with electric equipment for power supply: Vehicle,GPS, mobile phone, camera, mp3 \nQuantity: 1 Set (other accessories demo in the picture is not included)\n\nNote: \n1.Transition: 1cm=10mm=0.39inch\n2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\n3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n4.No retail package\n\nPackage includes:\n1 X Dual USB Car Charger Power Socket LED Voltmeter With Switch and cable\n4 X Screws"]