Bakeey BH520 Head-mounted CLASS 2 bluetooth Noise Reduction Earphone Handsfree Music Monaural Headphone for Computer Tablet PC Laptop

Size ConversionInches Centimeters Please according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.BH520 is a bluetooth headset with CSR8615-V4.0 high-quality BT chip as the core unit. Its transmission power level is Class 2, and it is characterized by low power consumption and simple and fast matching. It supports the protocols HFPV1.6, HSPV1.2, A2DPV1.2, AVRCPV 1.4 and is applicable to BT phones from version from 1.1 to 4.1.Features:Lightweight and beautiful,meets the mechanical structure of the human body. It is comfortable to wear, especially suitable for long-time wearing.Equipped with single-direction noise-proof microphone, can remove filter the noise outside the range of 1 meter, and it is suitable for noisy environments.BH520 can not only support the hands-free function of cell phones, but also let you enjoy wireless high-quality music.Can be used to on the computer with supporting BT technology, , by which you can talk to other through network communications, such as Skype, MSN, Messenger, etc.Specifications:  Type: HeadsetProduct No.: BH520Color: BlackBT version: CSR8615-V4.0 CLASS2Frequency scope: 2.4GHz-2.480 GHzTransmission distance: 10M (The transmission distance differs with environment factors and the BT device of mobile phone)Work hours: 12 hoursStandby time: 250 hoursSupport agreement: HFPV1.6´╝îHSPV1.2´╝îA2DPV1.2´╝îAVRCPV1.4Charging interface: Micro USB Battery Specification: Rechargeable lithium battery´╝ê3.7V ,180mAH´╝ëCharging power supply: 5VDC,100-240V AC adapterPower rating: 3MWSound track: Single trackNoise-signal ratio S/N: ÔëÑ30DBFrequency scope: 20Hz-20KHzDistortion factor THD: Ôëñ1%Speaker unit: external diameter  28mmMicrophone: one-direction noise-proofImpedance: 2.2K╬®;Sensitivity: 40┬▒3dBUsing temperature: Temperature: 0┬║ C ~ 40┬║ CHumidity: 0% ~ 85% RHTorage environment: temperature: -30┬║ C ~ 40┬║ CHumidity: 0% ~ 90% RH     Package size: Approx.19 * 16 * 4cm / 7.5 * 6.3 * 1.6inPackage weight: Approx.215g / 7.6ozPackage List:1 * Headset1 * User Manual (English)Read more