Rechargeable Battery Air Pump: Equipped with a long-life lithium battery that lasts for at least 500 charging cycles. 2W (2200 mAh). If there is a power outage, it can run for up to 30 hours. Ideal for supplying oxygen during power outages. Also suitable for outdoor fishing, seafood and fish product transportation. 2 working modes: Press the power button to start the air pump (non-stop mode), press it a second time to start the intermittent mode (right light on, runs for 10 seconds, then pauses for 10 seconds). Press the power button again to switch the pump on. Portable Metal Clip & Adjustable: Easily fix to glass or fishing box wall with metal clip. It also features air volume, which you can adjust after installing it to the air pipe. Quiet and Energy-saving: The rechargeable air pump is energy-saving and made of ABS material with excellent sound insulation and high temperature resistance. In addition, it is equipped with non-slip and shock-absorbing foot pads, which significantly reduce the noise during operation, so that the noise when the pump is running will not cause interference. VERSATILE USES: Our oxygenating fish provide continuous, natural, reliable bubble generation. The dual air pump is highly compatible with stones, bio-sponge filters, windmill decorations and other aeration equipment. Enhance the aeration and beauty of your water feature with this versatile air pump.