Product Overview: This Portable Wireless Smart Air Pump is a multifunctional device designed for inflating car tires, bicycle tires, and other inflatables. Key Features: ‣ Wireless Operation: Battery-powered design eliminates the need for external power sources during use. ‣ Digital Pressure Gauge ‣ Built-in Power Bank: Provides emergency charging for electronic devices via USB output. Technical Specifications: ‣ Battery Capacity: 2000mAh (varies by model). ‣ Charging Time: 7.09 x 5.12 x 3.94 inches ‣ Dimensions: Compact and lightweight for easy portability.