This is not only a bike extender bracket for your bicycle light, speedometer, etc, but also a rechargeable power bank. Made of high strength Aluminum Alloy, excellent shockproof and maximum firmness. easy to clean and durable. Give you best support during cycling. Features: Not only a handlebar extender, but also a rechargeable power bank. Aluminum alloy construction, solid, strong, corrosion-resistant and easy cleaning up. Fix it tightly on your handlebar with 2 screws on both sides. Double gaskets protect your handlebar from slipping or scratching the rod. IPX6 waterproof, work normally in rainy days. Can be mounted on handlebars of 22-32.8 mm. Nice holder for bicycle light, speedometer, GPS devices, flashlight or smartphones, etc. Specifications: Material: Aluminium alloy Color: Black Battery: 2 * 18650 Li-battery(not included) Product Size: 205 * 95 mm / 8.1 * 3.7 in Package Size: 25.5 * 11.2 * 4 cm / 10.0 * 4.4 * 1.6 in Package Weight: 250 g / 8.8 oz Package List: 1 * Handlebar Extender Note: Battery is not included.