This AEC BQ621 is a kind of fashionable， sporty， waterproof and stereo Bluwtooth headset. This Bluetooth headset is elegant in appearance and excellent in performance. ThisAEC BQ621 Collar Hand Style Waterproof Sporty Wireless Bluetooth V4.1+ EDR Headsetadopts latest Bluetooth V4.1 to ensure its stable and excellent performance. Designed into head wearing style， it is comfortable to wear without pressure. With low consumption， smart voice navigation， microphone noise reduction， 3D sound effect and vibration alert， AEC BQ621 is very practical and convenient!Moreover， this Bluetooth headset can connect two mobile phones simultaneously. Believe in it and it will bring you better musicexperience!                                    Features            Provide you with pure and high performance tone qualityCool and fashionable appearanceWaterproof， sporty， stereo Bluetooth headsetAdopt Bluetooth V4.1 to ensure its excellent performanceIt is compatible with all cellphones or other devices with Bluetooth functionIt can connect two phones simultaneouslyLow power consumption， smart voice navigation， noice reduction function， etc                                                            Specifications            Bluetooth Version    V4.1 + EDR    <br>Support Profile    HFP， HSP， A2DP， AVRCP    <br>Music Playing Time    6 Hours    <br>Talking Time    10 Hours    <br>Standby Time    240 Hours    <br>Charging Time    ≤ 2 Hours    <br>Working Range    ≤10 Meters    <br>Frequency Range    200Hz-20000Hz    <br>Microphone    -45db    <br>Color    Black    <br>Dimensions    (6.50 x 5.51 x 0.98)" / (16.5 x 14 x 2.5)cm (L x W x H)    <br>Weight    2.36oz / 67g    <br>                                                            Package Includes            1 x Bluetooth Headset1 x USB Cable1 x User Manual