Feature: 1. 3D Surround Sound: Dual speakers and smart sound create a 3D surround effect for an immersive audio experience. 2. Smart Touch Control: Easily manage your music with a simple touch on the control panel. 3. High-Capacity Battery: The built-in 4000mAh battery ensures long-lasting playtime. 4. Emergency Power Bank: Can be used as a power bank to charge your devices in case of emergency. 5. Versatile Connectivity: Supports BT connection for hands-free calls, and 3.5mm audio cable connection. Specification: This wireless BT speaker sound system offers 3D surround sound music, smart touch control, a high-capacity battery, and serves as an emergency power bank. It's lightweight, portable, and perfect for any occasion. Features: 3D Surround Sound: Dual speakers and smart sound create a 3D surround effect for an immersive audio experience. Smart Touch Control: Easily manage your music with a simple touch on the control panel. High-Capacity Battery: The built-in 4000mAh battery ensures long-lasting playtime. Emergency Power Bank: Can be used as a power bank to charge your devices in case of emergency. Versatile Connectivity: Supports BT connection for hands-free calls, and 3.5mm audio cable connection. Specifications: Colour: Black/Blue/Red(Optional) Material: metal + smart touch BT solution: BT 5.0, High clear call surround sound quality Standby time: 50 days+ Battery capacity: Built-in 4000mAh mAh battery Power: 5W*2, stereo Working hours: 15-20 hours Charging time: about 3-4 hours Communication distance: 10-15 meters without barriers Weight: 423g / 0.93 lbs Package list: 1*BT Speaker 1*Carrying bag 1*USB charging cable 1*User manual 1*3.5mm audio cable Package List: 1*BT Speaker 1*Carrying bag 1*USB charging cable 1*User manual 1*3.5mm audio cable