ContalkeTech Walkie Talkie Wireless Bluetooth Headset for Kenwood Baofeng HYT Linton Puxing Tytera WEIERWEI Wouxun Two Way Radio K1 Connector Optional Connectors for Other Radios Available (1 Pack) For ALL M2 Plug Two way radio (Motorola, HYT/Hytera Cobra, Olympia and TriSquare radio) Bluetooth Version: V4.0 Frequency Range 2.401-2.480GHz Support: multi-point connection, able to connect one two way radio and one cell phone simultaneously. Bluetooth Adapter 2.0+DER + bluetooth Earpiece V4.0 + Finger PTT wireless 2.4 GHz