Fish Tank Oxygen Pump USB Rechargeable Quiet Double Hole Mini Aquarium Air Pump for Indoor Fishing

Feature: 1. [Ultra Quiet] The aquarium air pump is set to 40dB and is very quiet. The bottom has 4 non slip rubber feet to prevent sliding and reduce noise. Giving you a quiet environment. 2. [Pure Copper Motor] This aquarium air pump uses an all copper high frequency regulated transformer for low resistance, low consumption and stable oxygen supply. 3. [Powerful Motor] Fish tank bubbler pump offers consistent performance and is equipped with a powerful motor that delivers high volume and consistent bubbles with ease. 4. [Rechargeable] Aquarium oxygen pump can be plugged in or recharged for use. Switch from electric to battery when current is interrupted for safety and energy efficiency. 5. [Small And Portable] Small aquarium oxygen pump for indoor or outdoor fishing use, where fish may be deprived of oxygen for long periods of time without an oxygen pump supply. 6. [Applications] Air pump is perfect for freshwater and seawater aquariums and is suitable for fish tanks with a capacity of 15 to 30 gallons. Create a healthy environment for fish, corals in your aquarium system. Specification: Item Type: Fish Tank Oxygen Pump Material: ABS Product Model: SB 228 Battery Type: 1 x Li Ion Battery, Battery Type: 18650 Battery Capacity: 4800mAh (Shipped with Built in Battery). Package List: 1 x Fish Tank Oxygen Pump1 x Charging Cable2 x Air Hose2 x Air Stone1 x Manual Note: 1. This product must not be submerged in water.2. When using the air pump, it must be above the surface of the water. If the air pump is below the water surface, a non return valve must be installed in the middle of the air tube (not included).3. If the air pump power cable is damaged and the air pump is inadvertently immersed in water, please cut off the power immediately and stop using it.4. When installing or dismantling and cleaning the air pump, it must be unplugged and disconnected from the power supply first to ensure safety.5. Clean or replace the air hose and air stone frequently to achieve maximum gas flow and extend the life of the air pump.6. It is recommended that all water appliances are connected to a socket with a safety switch.7. When using outdoors, avoid direct sunlight and rain.8. Press ON OFF to enter intermittent mode in the power on state, the working light flashes, the motor works for 10 seconds and stops working in 10 second cycles.9. Emergency start mode: When the machine is manually switched off after inserting the charger (or when the charger is inserted after a manual switch off), the machine will automatically switch on in continuous mode in the event of a power failure. When discharged, the machine will automatically shut down under over voltage protection. When mains power is restored, it will restart in continuous mode and charge automatically.