1. The appearance is novel and fashionable. 2. The shell is made of ABS plastic, which is muted. 3. It automatically switches to battery power after disconnecting the adapter. 4. It adopts button type tact switch and DC socket waterproof cap design, which greatly enhances waterproof performance. model Rated power supply rated power greatest pressure Maximum displacement Dimensions JT-202S DC 5V 1.5W 0.016MPa 2x1L / min 122x82x40mm