1. Material: plastic+Silicone+Cloth Cover 2. Wraparound design 3. Built-in 600mAh polymer battery 4. Built-in microphone with hands-free (telephone) function 5. Equipped with 2 passive radiators, bass enhancement 6. Three-button control lets you make calls, play and pause tracks 7. Output power: 3W x 2, stereo 8. Bluetooth solution: JL Bluetooth 5.0 9. Audio input: wireless 10. Working distance: 20m max 11. Working hours: up to 12 hours 12. Speaker unit: 33mm 13. Weight: 243g