nMa>EwAatT POWER WHEN YOU NEED IT Digital Inverter Technology Pure sine wave inverter technology Parallel connection cable included No parallel box required Low Noise at 63DB 2.1 AMP USB Output Economy Low Idle Setting Smart Engine Control that reduces engine speed, depending on size of the load for better fuel efficiency. 2500W maximum output is one of the highest in its class that enables it to efficiently power up multiple electrical devices, Lightweight and portable at only 23.5kgs.