Features: The product has an external fuse, the reverse prompt, and the battery display. 1 Type C interface, 3 USB interfaces and 2 cigarette lighter interfaces, are easy and convenient to use. The inverter has built in microcomputer processor and complete protection circuit, with installation protection functions. Can achieve undervoltage protection, overvoltage protection, overload pr otection, over maintenance protection, short circuit protection, over temperature protection, surge protection, etc. With intelligent automatic protection function, advanced anti-interference technology, soft start circuit, and convenient operation mode. Specification: Condition: Brand new Material: metal Color: As pictures shown Type: Automotive Inverter Circuit Topology: Full bridge Output Power: 4000 (W) Inverter Efficiency: 85 (%) Load Adjustment Rate: 5 (%) Rated Capacity: 4000W Output Frequency: 50 (HZ) Maximum Output Power: 4000 (W) Continuous Output Power: 650(W) Package List: 1 x Inverter 1 x Black and Red Power Cord 1 x Instruction Manual Note: 1. When installing the cable, please use the wire supplied by the manufacturer. .