Features:

【IP65 waterproof 】 With IP65 waterproof, this bicycle speaker  is perfect for horse riding, beach, swimming pool, bathing and other indoor or outdoor activities.
【Portable and Compact Design】Only 3.2 inches, this mini Bluetooth speaker is convenient to take anywhere. And with a metal hook, it is more portable for your travel.
【Bluetooth 5.0】 Compared with other wireless speakers with Bluetooth 4.2, this speaker gives you a more stable and continuous connection.
【10 Hours Playback】 Built-in high capacity lithium battery, it can play up to 10 hours at 60% volume. So you can enjoy high-quality stereo sound