Every detail has been perfectly designed for a better user experience. Dual-mic noise cancellation and HD Voice support make the Bluetooth 4.1 Mini bluetooth earphone an exceptional choice for sound quality for any Bluetooth earphone user. It also makes a bold fashion statement， outfitted in fashion style with a circular ring and chrome accents. Add to this a new comfort-forward earpiece and earhook design and the Mini Bluetooth headphone is truly hard to beat. Features: Fine and unique fashionable design Compatible with all bluetooth enabled device High definition sound Quite low electricity consumption Strong in anti-interference and confidentiality Support multipoint connection: pair 2 phones at the same time. Support Handsfree calling & Music playing. Specifications: 1. Charging voltage: DC5V 150mAh 2. Working current: 25-35mA 3. Bluetooth A2DP Working range: 10m 4. Output power: 35mW 5. Frequency range: 2.401-2.480GHz 6. Distortion factor: ��1% 7. Frequency response: 20Hz-20KHz 8. Working Time: Music/ HuaTong state 4-6 hours (The Volume will affect the time) 9. SNR: S/N��95 10. Charging Time: 1h-2h 11. Talk time: 4-6 hours， play time: 4-6 hours 12. Music Playing Time: up to 4 hours 13. Frequency Response: 20 ~ 20000Hz 14. Sensitivity: 80dB 15. Impedance: 32 ohm Package include: 1X mini Bluetooth headset 1X USB Cable 1X User Manual