Specification: Main material: ABS Product colors (optional): blue, black, green, green, gray, purple, red Product size: approximately 100x72x50mm/3.94x2.83x1.97in Net weight of product: approximately 214g Audio battery: 500mAh polymer battery (shipping includes battery) Usage time: about 3h Charging method: Type-C USB charging Radio function description: After turning on the phone, press m to switch to fm. If you need to strengthen the signal, you need to connect the audio cable to the speaker and switch to the radio function. The sound effect will be much better this way Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1 x Bicycle speaker 1 Set x Accessories 1. Bike-mounted Design: The speaker is designed to be mounted on a bike conveniently. It can be easily fixed onto the bicycle handlebars or frame without using additional brackets. 2. Bluetooth-compatible Connectivity: With Bluetooth-compatible connectivity feature, the speaker can connect to your phone, tablet, or other devices. Enjoy high-quality music and wireless radio reception while riding your bike. 3. High-Quality Sound: The bike Bluetooth-compatible speaker provides clear and powerful sound quality, whether playing music or listening to the radio. You can enjoy an excellent audio experience while riding your bike. 4. Waterproof Design: Waterproof design allows for use in damp or rainy conditions without worrying about damage from water exposure.