Specification:Model: BSV-AP005 Pro1. Battery standard:Battery type: 18650 lithium batteryRated voltage/capacity: 3.7V 1800mAH2. Solar panel parameters:Solar voltage: 6 V 2.5 WSolar current: 420MAProcess: PET stratification3. Pump settingsoxygen:Pump typeAir: pumpair caVoltage value: 3.5 VThe highest current: 450MASound bath: 50dBMinimum air flow: 1L/min4. Circuit Parameters:Operating voltage range: 3.0V-4.25VMaximum working current: 450MADischarge protection voltage: 3.0 VCharging protection voltage: 4.25 VWorking time: about 22 hoursWithout light controlProduct size: 21.5X17.5X7 cm/8.5x6.9x2.8 inch[Conversion: 1 cm = 0.3937 inches, 1 inch = 2.54 cm]Three Modes:Mode 1: high speed. The green light is always on.Mode 2: Low speed. The dark blue light is always on.Mode 3: Low speed (work for 10 seconds; stop for 10 seconds). The sky blue light is always on.Instructions:1. Connect the stonebubbles at the aeration hole and place it in the body of water that needs oxygenation. The solar cell facessunlight and there is no obstruction between the solar cell and the sunlight. Press the power switch and the pumpoxygen beginsfunction.2. This product is an electronic product. The oxygen increasing part of the device cannot be placed in water, and the diversion hole cannot be blocked.3. This product is a solar energy product. The charging speed is relatedsunlight intensity. Regular cleaning of dirt on the solar cell can improve charging efficiency.Package Included:1x Solar panel1x Daration pump1x Solar panel mounting1x Water pipe1x Manual2x stoneBubbles1 set of accessoriesNote:-Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully.-Please allow 1-3CM differs due to manual measurement.-Due to the different display and different light, the picture may not reflect the actual color of the item.Thank you for your understanding.If you have any questions, please contact us.I wish you a happy shopping time!