1. Full machine waterproof design, washable, anti-infrared interference 2. The amount of liquid is 1ml. After 2 seconds interval, a second liquid will be released (if the palm stays for more than 2 seconds) 3. Before replacing the new battery, first press the power switch of the base 4. Size: 7X9.4X18.8cm 5. Capacity: 200ml 6. Net weight: 170g 7. Material: ABS 8. Rated voltage: DC/6V 9. You need to bring your own 4 1.5v batteries