1.Aluminum enclosure with excellent tactility and small size as cellphone, space-saving size makes storage easy. 2.2000 mAh li-ion battery capacity offers a long-lasting battery life,making users free from wires. 3.Versatility. 5 modes (basketball /bicycle/ motorcycle/ auto/SUV) available to meet your need.All kinds of modes can be switched with one button intelligently. 4.Precise inflation without watching realized by presetting tire pressure and shutting off automatically at desired pressure to avoid over inflation.Reinflation quickly in 30s without waiting. 5.Mesh vent design at the bottom helps cool down the electic motor to make sure a stable operation of appliance. 6. Precise tire pressure monitoring controls tire health status,Build-in LED light is easy to inflate at night 7.Built-in battery charging mansgement scheme,more durable battery.