1. Bluetooth Version--JL4.2
2. Working Range-- Up to 10m
3. Working Time--around 3 hours
4. Driver diameter-- 10MM
5. Frequency Response--20Hz-20Khz
6. Battery Voltage--55mAh
7. Battery Charging Voltage--5V¡À0.5V
8. Charging Time--around 2hours
9. Charging cable--30 cm
