Product description Feature: 1. GOOD SOUND EFFECT Shocking and deep bass, high volume, no interrupted music, 360° all round sound effect. 2. BLUETOOTH 5.0 BT 5.0 technology, lower power consumption than BT 4.2, faster transmission speed, better anti interference ability. 3. EASY TO USE Support memory card playback, compatible with various Bluetooth devices such as tablet, laptop and mobile phone. 4. 3‑4H PLAYTIME This portable Bluetooth speaker can work up to 3‑4 hours, allowing you to enjoy music better. 5. PORTABLE DESIGN Outdoor speaker, you can take it to enjoy listening anytime, anywhere, adding a wonderful experience to your journey.