1 Pair (2pcs) FDC Motorcycle Bluetooth Helmet BT Interphone Kit 1000m Bicycle Intercom Headset with NFC function It can communicate with paired cell phone for a range of up to 30 ft (10 meters) It can connect to two (2) Bluetooth enable devices simultaneously e.g. cell phone and GPS system It supports 1-to-1 intercom functionality for a range of up to 3,280 ft (1,000 meters) with full-duplex communication It can be setup to communicate with 2 other headsets via the built-in intercom system (e.g. A-B or A-C) Compatible with most mobile Smart phones (Apple iphones, Samsung, LG, Droids, Windows phones, and many others