Usage Tips:The pump is specially designed for increasing oxygen levels in your fish tank or bait bucket, helping to keep your bait and catch alive and healthy. With its compact and lightweight design, it is easy to transport and store. And with its dual-use USB connectivity, you can charge it from a power bank, laptop, or any USB-enabled device.Super-quiet motor for silent operationLithium-ion rechargeable battery for long-lasting useCompact and lightweight design for easy portabilityDual-use USB connectivity for charging on the goHelps increase oxygen levels in fish tank or bait bucket for healthier bait and catchColor: whiteSpecifications: 1: lithium battery single hole:Weight:278gPower:1WGas volume:3L/MinBattery capacity: 1800MAHSuitable for fish tank: 40cm or lessIntermittent time: 48 hoursContinuous working time is up to 24 hours.Intermittent working time up to 48 hoursWork 8 seconds and stop 10 seconds2: Lithium battery double holeWeight:388gPower:2WAir volume:2*3L/MinBattery capacity: 2600MAHSuitable for fish tank: 60cm or lessIntermittent time: 48 hoursContinuous working time up to 24 hours, theintermittent working time z up to 48 hoursWork 8 seconds and stop 10 secondsPackage includes: 1pc*oxygenation pump