bluetooth stereo earphone, Clear dialogue, easy op

Phone has become essential daily work life as a communication tool, stereo Bluetooth headset as mobile phone accessories, well more than welcome. Friend to use for all types of fashion, especially for driving, banks, hospitals, offices, restaurants, rituals, hotels and other industry professionals. Free time listening to music, a call comes in automatically. Work and leisure all in one. Please select the products to your buyers to confirm product features. Clear dialogue, easy operation, anytime, anywhere, wireless freedom! More with less. Office, driving, walking or outdoor sports, get rid of cable, hands free, Features: Support AVRCP, playback can support one, the song, pause / play, stop and other control operations. Support A2DP mobile phone and PC music, high-quality stereo music, pure sound quality. Support Headset Profile, call clarity. No noise. After the call automatically switches to the state music Support Handfree Profile, get rid of cable, hands free, compatible with many major brand Bluetooth cell phone as a hands-free use. Built-in rechargeable polymer battery, light weight, long life, small size, and environmental protection. Safe, low radiation. Stylish gorgeous. With the Bluetooth adapter, can be used online voice chat. Call clear. Product Accessories: Charger / manual / ear hook / packaging Specifications: AC power: 100 240V AC adapter Charging voltage :5.0 - 6 .0 V DC, Charging current: 100-300mA :1-2 hours charging time Talk time :3-4hours Standby time: up to100 hours Spread Spectrum: Frequency Hopping Spread Spectrum (FHSS) Working range: 10 meters of wireless communication Size: 50mm × 16mm × 8.8mm Weight: 10g Technical Specifications: Chipset: csr Transmission power: Class2 less than 4dbm, low radiation. Bluetooth version: Bluetooth V2.1 + EDR and is compatible with V2.0, V1.1 and V1.2 . Bluetooth protocol: A2DP, AVRCP, Headset Profile, Handfree Profile Frequency range :2.401-2 .480 GHz (2.4GHz ISM Section) Receiver sensitivity:<-82dBm,BER<0.1% Microphone Sensitivity: <-45dB(0dB=1V/Pa,1KHz) Left and right channel separation:>49dB SNR:>80dB Dynamic Range:>85dB Distortion<0.5% Frequency response: 20-20000HZ Operating temperature: -10 °C 55 °C