This portable water heater allows you to get hot water up to 185°F in seconds with a flow rate of 1.5GPM, ensuring you a comfortable hot water experience while camping, hiking, fishing, or washing up outdoors. Equipped with a portable handle, easy to carry without burden. It has a built-in 4000mAh large-capacity lithium battery, which can continuously provide hot water output for up to 100 minutes when fully charged, and supports charging and use at the same time. It can be fully charged in 3 hours. In addition to battery power, it can also be directly powered by a 12V Dc power adapter to meet the power needs of different outdoor scenarios. The intelligent temperature control system automatically restarts heating when the water temperature drops below 158°F, ensuring a continuous and stable hot water supply. The simple and easy-to-use design allows you to quickly complete the installation and start warm and comfortable outdoor bathing time at any time.