Multi-advantage:This product is equipped with minature diaphragm pump,with high efficiency,low noise,small vibration,high suction,high head, and many other advantage.4xAA batteries and adapter dual-mode uninterrupted power supply,safe and reliable,let you easily,carefree. Safety and Environmental friendly: When the battery power is low, the device automatically stop watering to protect itself. If you have battery operation, and set it watering 1 minute everyday, it can keep working last about 5 months. At the same time, compared with traditional and plant irrigation drippers, it can save 70% of water. So there is no need to worry about safety and waste of water and electricity. : There is no fixed faucet restriction, you can water wherever you want.The lift of the suction pump is 2.5 meters, no need to worry. At the same time,our automatic watering device not only supports USB,battery also could be choosen. Rated voltage: 5V Noise: 65db (30cm distance) Rated current: 720mAx2 Working temperature: 5-50 Power: 3.6wx2 Head: 2.5m Interface diameter: 4.8mm Matching pipeline: 4/6, 4/7 Suction lift: 2m Maximum water pressure: 30psi Battery type: 4xAA 1.5v alkaline battery(not included)/Type-C plug-in Flow: 0.3-0.8LPM Full LCD display; Watering time is from 1 second to 59 minutes and 59 seconds, and the interval time is from 1 hour to 30 days 23 hours freely adjustable; Stainless steel folding hook; Continuous power failure, No water detection; Dual control. Low battery alarm. Color: Black Material: ABS Package Contents: 1set x two pumps for watering 20 flower pots Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.