Important Note: Fits most Flip-up Modular, Full-Face and Open-Face helmets.Bluetooth Class/Version: Bluetooth 5.0, QCC ICIntercom Mode: Helmet to Helmet (2)Intercom Mode Talk Distance: 600 MetersFull Function Operating Time: 8 HoursFull Charge Standby: 20 DaysTime to Full Charge: 3 HoursLithium-Ion Battery Capacity: 800mAhVoice Command Dial: One-Touch Voice-Command from Cell-Phone ContactsHelmet Speakers: Stereo Slim-line High-OutputBoom/Chin-Bar Microphones: Noise Cancelling both Types IncludedControl Buttons: Large Easy to Use w/GlovesCharge Port Connector Type: Type -CMounting Features: Clip-On or Adhesive Backed Mounting PlateThis new model JMC Performance series BT-05 Bluetooth helmet headset has been designed forinstallation into most flip-up modular, full-face or open-face style helmets.This helmet headset kit includes BT05 control head, USB charger/adapter cable, both boom & chin-barstyle microphones, two slim-line high-output mount in helmet speakers, mounting clip, control headbase, mounting hardware, Velcro/adhesive pads and complete installation/operation instructions.