The Bluetooth waterproof speaker is a speaker device with a Bluetooth connection function. It has waterproof performance and can be used outdoors or in a waterside environment. Here are some of its features: 1. Bluetooth connection: Bluetooth waterproof speakers can be connected with mobile phones, tablet computers and other devices through Bluetooth technology, without using traditional wired connection methods. This makes the speakers more convenient and flexible to use. 2. Waterproof design: Bluetooth waterproof speakers are designed with waterproof materials and craftsmanship, which can resist water intrusion to a certain extent. That way, you can use it outdoors, by the pool, or on the beach without worrying about water damage. 3. FM radio function: Some Bluetooth waterproof speakers also have FM radio function, which can receive and play radio stations through the built-in radio module. 4. Hands-free calling: Bluetooth waterproof speakers are usually equipped with a built-in microphone and hands-free calling function. When you connect with your mobile phone and answer an incoming call, you can make a call directly through the speaker, which is convenient and practical. 5. Ultra-long playback time: Bluetooth waterproof speakers are generally equipped with high-capacity batteries, which can provide a longer playback time. Playtime depends on factors such as usage, volume, and battery capacity. 6. Clock display: Some Bluetooth waterproof speakers are also equipped with a clock display function, which can display the current time and provide convenient time viewing. It should be noted that the degree of waterproof performance varies from product to product, so follow the product's waterproof instructions when using it, and avoid prolonged immersion in water or exposure to extreme conditions. To sum up, the Bluetooth waterproof speaker has the functions of Bluetooth connection, waterproof performance, FM radio, hands-free calling, long playback and clock display. It is a speaker device suitable for outdoor use, which can provide convenient music enjoyment and call experience.