General description This 4 in 1 Charger Socket Panel is a versatile multi-function device designed for vehicles, featuring a 12V USB socket, LED digital voltmeter, 12V cigarette lighter socket, and an LED rocker switch. It is convenient to install and use, and can be easily detached to replace other charger sockets or compatible devices. Technical specifications Style: 4 in 1 Charger Socket Panel Color: Black Shell with Blue LED Light Material: ABS USB Output: DC 5V / 2.1A & 2.1A (total 4.2A) Power Socket: DC 12V Voltmeter Display Range: 6 - 24V Rocker Switch: 20A 12V DC Package Weight: 135g Dimensions: Cigarette socket: Approx. 1.18" * 2.13" (30mm * 54mm); USB car socket: Approx. 1.18" * 2.05" (30mm * 52mm); Rocker switch: Approx. 1.18" * 1.57" (30mm * 40mm); LED voltmeter: Approx. 1.18" * 1.02" (30mm * 26mm); Four-hole panel: Approx. 4.13" * 3.42" (L*W) Usage Dual USB charging ports allow for simultaneous charging of two devices at optimal speed. Real-time LED voltmeter displays