Features: The intelligent watering system automatically waters the plants regularly; Can be powered by USB cable, or can use 4 AA batteries (not included in the product), the battery be used as backup power after the device is connected to USB; Drip irrigation head design, high efficiency, no damage to plants, saving; Intelligent memory chip, no need to reset watering parameters after power failure recovery, more convenient to use; Complete accessories, easy to assemble and use, one set of equipment can water 10 pots of plants and flowers; Small and light, does not take up space, it is very suitable for use in homes, offices, terraces, balconies, laboratories, etc. Specifications: Rated voltage: 5V External dimensions: 83 x 83 x 95mm Rated current: 720mA Power:3.6W(single pump) Interface diameter: 4.8mm diameter Matching piping: 4/6, 4/7 Max. water pressure: ≥30psi Flow rate: 0.3-0.8LPM Battery type: 4-AA 1.5V(Not included) Noise: ≤65db(30cm distance) Operating temperature: 0-50°C Head: ≥2.5m Pump body vibration damping material: silicone Suction range: ≥2m Watering duration: 0~999 seconds optional Interval time: 0~999 hours selectable Color: White Material: Plastic Precautions: Due to the difference in water level in the closed pipe, the pipe siphon. The problem can be solved by adjusting the position of the drip in relation to the water source. It is important that the dripping arrows are in place, otherwise you may not have enough water for Otherwise the dripping arrows may not have enough water! Package Contents: 1 x Smart Timer Watering Device 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.