Feature: 1. Variable frequency all copper motor, made of all copper, with strong load energy and low loss of power. 2. Triple cooling, long-lasting inflation without overheating, double-sided heat dissipation holes+spiralfan+built-in extended pump diameter, increasing heat dissipation speed by 99%. 3. Intelligent chip, automatic inflation and stopping, accurate pressure measurement. 4. Compact size for easy carrying and operate. 5. The air pump will automatically stopinflating when the inflation reaches the preset values. 6. easy Operate without noise. 7. Equipped with light, it serves as a flashlight at special moments and does not effect your operate at night. 8. Wear resistant rubber inflation hose, antifreezing and non breaking, explosion proof and high temperature resistant. Specification: Color: black Material: metal+plastics+rubber Power: 60W Inflation hose length: 100mm / 3.9in Speed: 25L/min Battery: 7.4V, 4000mAh Item size: 150 * 80 * 55mm / 5.9 * 3.1 * 2.2in Package size: 165 * 105 * 55mm / 6.5 * 4.1 * 2.2in Package weight: 545g / 1.2lb . Package List: 1 * Tire Pump 3 * Nozzle 1 * Hose 1 * USB Cable