ITEM NAME:Business Bluetooth Headset Sports Wireless Earphone Bluetooth V4.1 Phone Ha D9G2 Business Bluetooth Headset Sports Wireless Earphone Bluetooth V4.1 Phone Ha D9G2 Function:Sport,For iPod,For Mobile Phone Line Length:None Plug Type:USB Waterproof:No Is wireless:No Support Apt-x:No Support Memory Card:No Connectors:USB Active Noise-Cancellation:No With Microphone:Yes Style:Ear Hook Sensitivity:123dB Control Button:Yes Vocalism Principle:Dynamic Communication:Wireless Support APP:No Wireless Type:Bluetooth Volume Control:No This product uses the new headset shape design, using the world famous Bluetooth Stereo Bluetooth chips, to ensure high-fidelity sound quality and stable performance and excellent call quality. This product supports Bluetooth V2.1 version,Battery time supports up to 6-8 hours. 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: less than equal 1% 7. Frequency response: 20Hz-20KHz 8. Working Time: Music/ HuaTong state 6-8 hours (The Volume will affect the time) 9. SNR: S/Ngreater than equal 95 10. Charging Time: 1h 11. Talk time: 8 hours, play time: 7 hours 12. Music Playing Time: up to 4 hours 13. Sensitivity: 120dB 14. Impedance: 12 ohm Material: ABS shell Colour: Black Package Content: 1 x Bluetooth Headset 1 x USB cable 1 x Instructions.Wireless Type:Bluetooth. With Microphone:Yes. Bluetooth A2DP Working range: 10m. 1 x Bluetooth Headset. Is wireless:No. Line Length:None. 1 x USB cable. Support Apt-x:No.