General application: Input voltage: 12-24V; Output: 5V, 2.1A. It can charge almost any mobile phone, tablet, GPS, camera, etc. Convenient to charge: The included 7.5A SAE swivel connection cable can also be used with the charger to facilitate battery charging. Waterproof cap protection: The charging port is equipped with a waterproof cap to protect the internal circuit. Multiple installation methods: It can be installed with tape, cable ties or screws (these installation materials are not included). Energy Saving: Standby without power consumption. The USB port will enter sleep mode if no USB device is charging. Item Specifications: Compatible Devices: Mobile phones, GPS or cameras Input Voltage: 12-24V Output: 5V, 2.1A Package: 1 x USB Charger 1 x SAE O-Ring Terminal Harness