Features:1. USB power: It can be connected to mobile phone plugs, chargers, power banks, car chargers, and computers for charging.2. Air volume: The aeration pump has 1w power, large air volume, stable air output. It suitable for home use, field fishing, transportation and oxygen supply.3. Suitable for various occasions: The aeration pump can supply oxygen for shrimp, turtle, crab, fish, shell, etc.4. Noise reduction and mute technology: The aerator pump adopts a variety of noise reduction technologies, and only the sound of bubbles can be heard.This aquarium oxygen air pump has stable air output, noise reduction and silence, and can provide oxygen for many aquatic organisms.Specifications:Pump size: diameter: 3cm, height: 8cmPower: 1wNoise: silentUSB cable: 1mOxygen tube: 1mStyle: single tubeRecommendations for use: fish tanks, outdoor transportation, fishing, etc.Package Included:1 * Oxygen Air PumpNotes:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.