Feature:1. It is suitable for adding oxygen to various aquariums, fish tanks, ponds, especially for oxygen supply in emergency situations.2. Just put the air stone in the water and install the solar panels, once exposed to full sunlight, you can start working within a few seconds.3. Small in size, light in weight, it can be a very good choice for fishing enthusiasts to carry with when they go fishing.4. The motor noise of this oxygen pump is very low, the noise is lower than 60dB when working, and it will not affect the fish tank creatures.5. This Solar oxygen pump has two working modes, namely continuous oxygen supply and four second intermittent oxygen supply.Specification:Item Type: Solar Oxygen PumpMaterial: ABSModel: AP008Solar Panel: 6V/3.5WBattery: 3.7V/4000mAh Lithium Battery Cycle Life 500 Times (Shipped With Built-In Battery)Charging Time: Solar Charge About 10 Hours, USB Charge About 5 Hours.Air Pump Rated Voltage: 3.5VCurrent: 150MAAir Pump Noise: <60dBMaximum Air Flow: 1L/minMinimum Air Flow: 0.5/minCircuit Parameters:Operating Voltage Range: 3.0V-4.25VMaximum Working Current: 150MADischarge Protection Voltage: 3.0VCharging Protection Voltage: 4.25VWorking Mode: 2 gears (continuous aeration and aeration intermittent wall oxygen for 4 seconds, stop for 4 seconds and repeat the cycle)Whether With Light Control: Without light control.Package List:1 x Solar Panels1 x Aeration Pump Host1 x USB Cable2 x Oxygen Tube1 x Bracket1 x Ground Rod1 x Screw Accessories Kit2 x Counterflow Valve2 x Bubble Stone1 x Wrench1 x ManualNote:1. This product is an electronic product. The aerator part cannot be placed in water, and the diversion hole cannot be blocked.2 This product is a solar product, please face the solar panel to the sun, and ensure that there is no obstruction between the solar panel and the sun. The charging speed is related to the situation of sunlight. Regular cleaning of the dirt on the solar cells can improve the charging efficiency.