The T21 earpiece is easy to conceal and operate. With Kevlar reinforced cables and a 360 degree rotating clothing clip, the T21 has proven to be a top choice for public safety personnel. Compatible with Kenwood Multi-Pin Radios, TK2140, TK2180, TK3140, TK3148, TK280, TK290, TK380, TK390, TK480, TK481, TK190, TK3180, TK5210, TK5220, TK5310, TK5320, TK5400, NX200, NX300, NEXEDGE Series.