General description This 4-in-1 Charging Power Strip is a multifunctional panel designed for convenience and efficiency. It features a 12V USB socket, a digital LED voltmeter, a 12V cigarette lighter, and an LED rocker switch, making it an ideal solution for charging devices in vehicles, boats, or other applications. Technical specifications Style: 4-in-1 Charging Socket Panel Color: Black Housing 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 Cigarette lighter socket size: approx. 30 mm x 26 mm Car USB socket size: approx. 30 mm x 54 mm Toggle switch size: approx. 30 mm x 52 mm LED voltmeter size: approx. 30 mm x 40 mm Four-hole panel size: approx. 4.13" x 3.42" (L*W) Installation Assemble and install at any time. Turn the knob to loosen or tighten the screw for easy replacement of desired parts. Usage Charge two devices simultaneously at optimal speed