yideng bluetooth headset intercom motorcycle helmet interphone bt-s2 1000m walkie-talkie headphone waterproof wireless communication system up to 3 riders(2 pack) yideng <b>yideng bt-s2 waterproof bluetooth headset for motorcycle helmet with long-range bluetooth intercom designed specifically for motorcycles.<br /><br />★the bluetooth headset is compatible with bluetooth cellular phones and it works with any full-face helmet and most half-face helmets.<br /><br />★bluetooth 3.0+edr and full-duplex:</b><br />2-3 riders can communicate each other,and 2 riders can talk to each other at the same time.<br />support high speed maximum up to 120km/h(75mph) in the case of good communication signal.<br />riders can communicate at a remarkable range of maximum distance up to 1000m at open ground.<b><br /><br />★auxiliary audio-in connection via 2.5mm jack.support incoming and outgoing audio.<br /><br />★listen to stereo music,fm radio and voice instructions of gps,news and traffic information and so on while driving,all functions can be switched freely.<br /><br />★easy to install and excellent waterproof.<br /><br />★headset profile (hsp) and hands-free profile (hfp)<br /><br />★advanced audio distribution profile (a2dp) and audio video remote control profile (avrcp).<br /><br />★other technical reference:</b><br />--frequency:2.4ghz<br />--sample rate: 48khz (dac)<br />--talk time: 8 hours<br />--stand-by time: 10 days<br />--charging time: 3.5 hours<br />--type: lithium polymer battery<br />--operating temperature: -10 ̊c - 55 ̊c (14°f - 131°f)<b><br /><br />certificates:<br />ce、 fcc、 rohs、 bqb<br /><br />in the box:</b><br />2xbt-s2 bluetooth headset main unit<br />2x super-slim stereo headphones and microphone<br />2x travel charger<br />2 x usb cable<br />4 x stickers<br />2 x wrench<br />2 x headset clip with fastening screws<br />2 x audio cable<br />1 x user manual<b><br /><br />tips :<br />●now there are many products have the same appearance as our company's on the platform,so please be cautious about purchasing. <br />●our products have passed strict inspection to ensure that quality and after-sales problems can be solved in time.<br /> ●when the item is not used for a long time, please leave it in a cool and dry place.</b>