Feature 1Strong and Durable: Simple structure, mini fuselage, no space, more strong and durable 2Double Outlet Design: Double outlet design, can be used in two tanks at the same time 3Suitable for: Large gas output, built in lithium battery, especially suitable for outdoor use 4Advantage: High frequency pneumatic motor provides even bubbles, strong air volume and more oxygen 5High Efficiency: High efficiency and energy saving, suitable for fish tanks, outdoor fishing, etcItem Type: Aquarium Air PumpMaterial: PlasticProduct Size: Approx.12cm / 4.7inBattery: Lithium Battery 18650 2000mAh (Shipped with Built in Battery)Voltage: US Plug 110-240V (Wide Voltage)Power: 1WUsage: Fish Tank, Outdoor Fishing, EtcWeight: Approx. 344g / 12oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x AquariumAirPump(Shipped with Built in Battery)1 xVoltage Line2 xAirStone2 xAirTube