Package Include:1 x Solar Panel1 x Waterproof Box 1 x Tube1 x Bubble Stone Specification:Name: Solar Oxygen Pump Solar Oxygenator Materials: PET Pressure Solar Panel & Metal Plastic PumpSolar Panel Size: 27x18cmWaterproof Box Size: 10.5x10x4.5cmCopper Cable Length: 3mBattery Type: 18650 Li-on BatteryBattery Quanity:1Pcs/2Pcs (Built-in Battery)Battery Capacity: about 1000mAh (1Pcs)Voltage: 6VPower: 5W Features:-PET pressurized solar panel, high efficiency, drop resistance, light weight, easy to carry.-Built-in 18650 Li-on battery, the battery can be recharged when there is sunlight.-The product waterproof box has hanging holes, which must be hung and installed for outdoor use.-The waterproof box has a built-in oxygen pump and a rechargeable battery, and has an on-off button for easy operation.-On cloudy days, the oxygen pump can also work normally without affecting the internal battery power supply. Lithium batteries can be recharged in the presence of sunlight and work continuously for 24 hours.