Color as shown Size: 30x25x5cm Weight: 200g 【USB Rechargeable】Up to 70 hours. Built-in 2600mAh rechargeable lithium battery provides up to 70 hours working time (intermittent mode). It is therefore suitable for; Outdoor fishing, fishing transport and power outages etc. It can be charged by devices with USB ports such as power banks, laptops, cigarette lighters and wall chargers. 【Strong air volume】The air pump can generate a lot of air and ensure sufficient air circulation in the aquarium. In continuous air supply mode, this pump air will continue to produce air bubbles. Air flow up to 3 l/min. Atmospheric pressure is 0.018 MPa. In the intermittent air supply mode, there is a 10-second pause every 10 seconds, which saves energy and prolongs the use time. Recyclable 【Energy Saving and Quiet】Air is 1W, so it saves energy and doesn’t overheat when working. At least 40 dB at the lowest bit rate. It will not affect your sleep while running. 【Applicable Scenarios】This Silent Air pump