Flexiable Throat Mic with finger PTT(Push To Talk) will give you the best radio communication experience while on the move. Specifically designed for demanding tasks in / setting. It is also widely used in discreet communications. Since the Miniphone transmits directly from your throat, it is not sensitive to the background noise. This is exceptionally perfectfor usage in high ambient environment such as driving, riding motorcycles and bicycles. With the best-quality transparent acoustic tube that could hardly be detected by people around you, this is also perfectfor surveillance purposes and security at airports, casinos, crowd control at conventions and concerts, and other working environment requiring discreet communications. Compatible with the following models: XTN Series:XTN446, XTN500, XTN600 XTN XV Series:XV1100, XV2100, XV2600, XV4100 XTN XU Series:XU1100, XU2100, XU2600, XU4100 XTN AX Series:AXV5100, AXU4100 Series:CLS1110,CLS1410,CLS1413, CLS1450, CLS1450C, CLS1450CB, VL50 Spirit Series:SV10, SV11, SV11D, SV21, SV12, SV22, SV22C, SU210, SU22, SU22C, SU220 VHF / UHF Spirit, Spirit Pro, Spirit Pro+, Spirit 10 Spirit Series:MU11, MU11C, MU11CV, MU12, MU12C, MU12CV, MU21C, MU21CV, MU22CVS, MU24CV, MU24CVS, MU24CVST Spirit MV Series:MV11, MV11C, MV11CV, MV12, MV12CV, MV21C, MV21CV, MV22CV, MV24CVS Series:CP88, CP040. CP100, CP110, CP125, CP150, CP200, CP250, CP300 GP Series:GP2000 , GP2100, GP300, GP308, GP68, GP88, GP88S SP Series:SP10, SP21, SP50+, SP50 CT Series:CT150, CT250, CT450, CT450LS :PRO1150, PRO2150, PRO3150 P Series:P040, P080, P1225, P1225LS DTR Series:DTR410, DTR550, DTR610, DTR650 Other Series:, GTX, LTS2000, VL130, PMR446, ECP100, One BPR400, EP450, AU1200, AV1200 Series:RDV-5100, RDV2020, RDU2020, RDU2080DD, RDU4100, RDU4160D, RDV2080D, RDV5100 :-150A, -450A, -160A, -460A Series:-V, -U colour:Black material:plastic Package Contents: 1 X Throat Mic Miniphone Covert Acoustic Tube Earpiece Headset Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.