[USB Charger and Power Bank] The bike handlebar extender features a rechargeable design and can be charged via USB port from a computer or other power source. It allows you to charge your phone, ensuring you don't run out of battery while outdoors. The charging function remains active when in use. [Sturdy Design] The clamps are well-designed and constructed from lightweight aluminum alloy, resistant to rust and color fading. The screw buckle provides secure fastening with high-quality screws for double protection. Includes a hexagon wrench for easy installation, removal, and adjustment. [Multifunctional Bicycle Extender] This practical bike rack adds extra space to your bicycle, ideal for mounting bike lights, speedometers, GPS devices, smartphone holders, and more. [Compatibility] The bike handlebar extender fits most bicycles with handlebar diameters ranging from 22 mm to 31.8 mm. Color: Black Material: Metal Package Contents: 1 x Bike Handlebar Extender 1 x USB Cable 2 x Battery Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3 cm. Only the items listed above are included; other products are not part of this package.