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 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 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 Waterproof Design: Waterproof design allows for use in damp or rainy conditions without worrying about damage from water exposure Multi-functionality: The speaker supports FM radio reception, enabling it to function as a radio station for added convenience Specification: Bluetooth version: V5.3 Transmission range: 10M Signal-to-noise ratio: ≥90db Battery capacity: 500mAh Built-in voltage: 3.7V Playing time: about 3-5H Horn size: 45mm*1 Horn power: 5W*1 Charging input: 5V/0.5A Size: 50*100*72mm Weight: about 214g