About this item Universal USB Charger - Adopts wide input voltage (AC 100-240V), providing longer and more stable charging, compatible with almost any smart device with DC 5V input. ON/OFF Power Switch - Features a switch to control the power supply, allowing continuous plugging. The 5ft cord provides convenient usage. Absolutely Safe - Built-in over voltage, over current, leakage, and short circuit protection module, made with high-quality, high-temperature resistant fireproof material to ensure the safety of equipment. Smart Identification Ports - Automatically detect all connected devices and adjust the output accordingly, allowing efficient charging of various combinations of smartphones and tablets at their optimal output. Dimensions: 4.45 x 2.28 x 1.18 inches.