Just press the LED light switch button and you can get the water quickly. Press the switch again for turning off the water flow. Easy to use, even for child and elders. 30 Days Battery Life Built in rechargeable 1200mAH battery after filled charged by 3 hours can be used for 30-40 days or around 6-8 bottles of 5 gallon water. Easy to recharge it with the included USB cable. Portable and useful water dispenser is easy for carrying in any pack or pouch, convenient to take for travel. USB fast charging. You can use and charge it anywhere. Ideal for home, school, office, travel and camping.