Welcome to our store! 1. WATERPROOF: This Bluetooth speaker boasts a powerful waterproof function, making it suitable for outdoor sports and cycling (can be used in the rain). 2. SERIES CONNECTION: This Bluetooth speaker supports a series connection function, allowing you to connect 2 speakers for a more powerful audio experience. 3. WIDELY APPLICABLE: With a simple appearance design that is modern and generous, this wireless speaker is suitable for a variety of usage scenarios. 4. MULTIFUNCTIONAL: The wireless speaker supports card insertion and radio, allowing you to listen to the radio and your favorite music, meeting your various needs. 5. COMPATIBLE DEVICES: Built-in Bluetooth technology allows for wireless connection to mobile phones, tablets, and other Bluetooth devices, making it easy to carry and use. Item Type: BT Speaker Material: ABS Battery Parameters: Lithium Battery (with built-in battery delivery) Battery Model: 503040 Battery Capacity: 500 mAh 1 x BT Speaker 1 x Charging Cable 1 x Connecting Cable 1 x User Manual 1 x Attachment Ring Customer Satisfaction - Customers are our top priority. If you find any problems with the product after receiving it, such as damage or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory customer service.