Feature: [Circuit Protection] — The seat charging socket has a built-in circuit to protect your phone from charging to reduce damage to your phone and battery while charging. [Multifunctional] — two USB ports for charging. The USB charging socket is compatible with all brands of mobile phone charging systems. [Universal voltage] — Power supply: Input voltage: 5 V-1 A; Output voltage: 5Vx2. 1 socket and 2 USB ports for connection and charging. [Smart Charging] — USB ports adapt to the needs of connected devices to charge at the highest possible speed, saving time. Specification: Item Type: Sofa USB Charging Socket Material: ABS Weight: approx. 127 g / 4,5 oz Line length: approx. 2,5 m / 8,2 feet Input Voltage: 5V-1A Output voltage: 5Vx2 Installation diameter: approx. 4,5 cm / 1,8 inch List of packages: 1 x USB charging port for sofa