1. Product parameters:Cell type :18650 lithium battery.Nominal voltage/capacity :3.7V 1800mAH.Solar energy voltage :6V2.5W.Solar panel current :420MA.Process: PET lamination.2. Oxygenating pump parameters:Air pump type: AC air pump.Rated voltage: 3.5V.Maximum current: 450MA.Bath sound: 50dB.Meanest flow: 1L/min.3. Circuit parameters:Operating voltage range: 3.0V-4.25V.Maximum working current: 450MA.Discharge protection voltage: 3.0V.Charge protection voltage: 4.25V.Working hours: about 22 hours.With or without light control: No light control.Product weight: 0.65Kg.Product size: 21.5X17.5X7CM.4. Working Modes:Mode 1: High level (steady green).Mode 2: Low (dark blue light steady on).Mode 3: Low on 10 seconds stop 10 seconds. (Steady blue).5. Instructions for use:Connect the bubble stone with the vent hole and put it into the water body that needs to be aerated. The solar cell faces the sunlight, and there is no shelter between the solar cell and the sunlight. Press the POWER switch and the aeration pump starts to work.6. Pay attention to the top:1. This product is an electronic product, the oxygenating part of the device can not be placed in the water, the diversion hole can not be blocked.2. This product is a solar product, and the charging speed is related to the strength of the sunlight. Regular cleaning of the dirt on the solar cell can improve the charging efficiency.