Mini USB Oxygen Pump for Small Fish Tanks DC5V Portable Fish Tank Air Pump with Single Air Hole Compact Aquarium Air Pump Silent Operation This mini aquarium oxygenator, powered by USB, is suitable for various scenarios. It provides ample oxygen for your beloved pets and is a lifesaver during power outages. Features: Compact and portable, suitable for various scenarios. Powered by USB, ensuring oxygen supply even during power outages. Suitable for water depth ≤40cm, meeting most aquarium needs. Exhaust volume 200ML/min, providing ample oxygen for pets. Equipped with a single air hole accessory for easier use. Specifications:  Material: Silicone  Color: Black  Powered : USB powered  Rated working voltage: 220V /110V (Optional), choose based on local grid voltage. Wire Length: 80cm / 2.62ft  Voltage: DC 5V  Power: 1.5W  Pressure: 13Kpa  Output: 200ML/min  Tank Depth: ≤ 40cm / 15.7in Size: 6.2*3.0cm / 2.4*1.2in  Weight: 120g / 4.2oz Package list:  1* Mini Aquarium Oxygenator  1* USB Power Cable  1* Single Air Hole Accessory