Features: Powerful air pump, with high efficiency air stone, capable to add enough oxygen. USB power design, easy to work with power bank, computer, laptop and more. Pure copper core motor, for stable operation, fast heat dissipating, low noise running without disturb. Lightweight, small air pump, with a hanging buckle, convenient to store, carry or install. Mini USB air pump, very suitable for home fish tank, aquariums, outdoor fishing, etc. Specifications: Material: Plastic Type: Black Color + 2 Air Stones, White Color + 1 Air Stone (Optional) Air Pump Size: 8.5*3*3cm / 3.34*1.18*1.18in Power Cord Length: 80cm / 31.4in Air Pump Weight: 73g / 2.57oz Package Size:13*9*7cm / 5.11*3.54*2.75in Package Weight: 142g / 5.00oz Note: Air pump set only, others in pictures are not included. Due to manual measurement, there may be deviation. Due to lights or others, it may slightly differ from pictures. Packing List: 1 * Air Pump 1 * Hanging Buckle 2 * Air Stone 2 * Tubing 2 * 2-Way Air Line Regulator Connector