Feature: 1. Noise Reduction: Using silica gel cushion to reduce vibration and friction, reduce noise. 2. Dual Mode: Continuous oxygen supply + intermittent oxygen supply dual mode, select the oxygen supply mode according to your needs. 3. Intelligent Protection Chip: It can be charged while working, after fully charged, it will only work without charging. 4. Convenient: USB cable, multiple charging methods, suitable for emergency oxygen supply for outdoor and transportation. 5. Automatic Switching: After power off, it will automatically switch the lithium battery to work. Specification: Item Type: Oxygen Pump Material: Plastic power Supply Mode: Usb Single Hole: Power: 1W Air Volume: 3L/min Pressure: 2x0.018Mpa Suitable for Fish Tank: 30-50L Battery: Lithium Battery (With Built in Battery) Battery Capacity: 2600mAh Double Hole: Power: 2W Pressure: 2x0.02Mpa Air Volume: 2x3L/min Suitable for Fish Tank: 30-100L Battery: Lithium Battery (With Built in Battery) Battery Capacity: 4800mAh. Package List: 1 x Oxygen Pump2 x Trachea2 x Air Stone1 x Manual1 x Usb Cable Note: This product must not be immersed in water.
