This listing is for the shark shk4rider4 Riders 1000M Bike to Bike communicator with Remote Talker Each purchase is for one piece not a pair Details Intercom Range3.5mm Line In For External Audio Device Waterproof Design, Handles All Weather Conditions Plug Earphone Microphone In Helmet Fits Into The Ear Well Of All Standard Helmets Up to120km/h Speedup to 8 Hours Talk Time, 150 Hours Standby Time New Advanced Features Wireless Remote Control Mounted On Grip or Elsewhere Allow The Driver To Control The Main Unit Without Taking Hands Off TheBikeControl Button Operate: Phone/Hang Off, Play/Pause, Vol + / Vol, Intercom Calling A, B, CKit Include: Main UnitSlim 5mm Hi Fi Stereo Speaker Boom and Velcro Microphone Mounting BracketUSB Charger3.5mm Audio Cable User Manual You also have the option to attach the remote control to the handle bar allowing you to have full control without even taking your hands off the handle bar. Wireless Remote Control: Riding with your interphone just got a whole lot better and safer. Control your Bluetooth intercom with confidence knowing your pushing the right buttons without even taking your hands off the handlebars Attaches on left handle bar or can be positioned mounted elsewhere6 buttons (Phone/Hang Off or Play/Pause, Volume + and A B C)Only uses power when you push the buttons, which should last 2-3 years. Simply replace watch type battery when required. Allows safe control of your Bluetooth headset (no guess work)Upgrades/Improvements: We have upgraded to slim 5mm Hi Fi Stereo Speakers with waterproof clip speakers and 2 microphones (boom and velcro wired). The sound and comfort performance is more than double from previous versions. Because its so slim you can now put the speaker