Features:
Brand new and high quantity.
Design in ultra mini size, light weight and portable.
Ultra-high-end switch with LED indicator light
CE certified quality, made of environmentally friendly anti-retardant materials
The switch easy to control and with the light to remind people when the switch on.
Voltage display can timely display the battery voltage whether in the normal use range or not and with digital display to let you know the battery's voltage accurate data.
Allow any automotive with a cigarette plug attachment to be used with these surface mount cigarette sockets.
Specification: 
Material :ABS,Metal
Suitable: Universal Car ,Boat,Truck
Color: Blue/Green/Red 
USB Charger:Operating voltage: 12V,Interface: 2 USB,Output: DC 5V/2.1A 5V/1A
Voltage Meter:Operating Range: DC 6-28V,Display: Digital display
Cigarette Lighter Socket:Operating Voltage: DC 12V
Switch:Indicator Light
Package Included:
1 x 4 in 1 LED Dual USB Car Charger Voltmeter Switch 12V Socket
8x Insulated Terminals
4 x Screws