Material: Aluminum alloy and LED Size: 23.2*10.5cm / 9.05"*4.09" Color: Black Battery: 2 18650 lithium batteries 1. The handlebar extension bracket adopts a multifunctional design, which perfectly integrates various riding needs, making your long or short trip more convenient and easy. 2. Made of lightweight materials, it ensures that the bracket is sturdy and without adding extra burden, providing a comfortable use experience for cycling enthusiasts. 3. Equipped with a high-brightness night light function, it is safer to ride at night; the light brightness can be adjusted to meet the light needs in different scenes and enhance the overall riding pleasure. 4. The battery module supports quick disassembly and replacement, with stronger battery life. There is no need to worry about insufficient power, and the device can be kept running normally anytime, anywhere. 5. Suitable for all types of bicycles, easy and fast installation, flexible adjustment, whether it is urban commuting or outdoor adventure, it can be easily handled. Package includes:1pc Bicycle extension rack