bluetooth Intercom Earphone For Motorcycle Helmet Riding Headphone Handsfree Music

Description 1 One button to set up the caller to answer automatically to satisfy different environment of customers 2 bluetooth version upgrade to bluetooth 4 2 customer use better 3 Product packaging volume and weight smaller and convenient transportation4 Product price optimization compared with other styles has higher cost performance and stronger market competitiveness Specification Working voltage DC5Vbluetooth version V4 2 BR EDRSupport bluetooth Protocol Suppore a2dp avctp avdtp avrcp hfp spp smp att gap gatt rfcomm sdp L2cap profileEffective distance 10 15 meters barrier free 30 metersFrequency 2 402 GHz to 2 480GHzDistortion 70dbData transmission rate 300Kb SAudio coding specification SBCTransmission power 4dbmSignal to noise ratio 90dbSensitivity 85dbbluetooth connection time 5 7SCharge time less than 1 hours Standby time less than 160 hours Continuous working time less than 8 hoursPackage Included 1 X Motorcycle Helmet Earphone