Professional Two-Wire Surveillance Kit with quick disconnect audio tube & ear tip (clear), and a kevlar reinforced cable.
Color: Black
Connector: K2
Compatibility: NX-200, NX-210, NX-300, NX-410, NX-5200, NX-5300, NX-5400, TK-190/290/390, TK-2140/3140, TK-2180/3180/4180, TK-280/380/480, TK-3148, TK-3212, TK-385, TK-481, TK-5210, TK-5220, TK-5310/5410, TK-5320/5420, TK-5400, TK-5410
See your compatible connector here