Retevis RB48 Walkie Talkie Earpiece with Mic 1 Pin 2.5mm, VOX, Coiled Cord, Acoustic Tube, Compatible RB48 RT49 RT49B RT49P Two Way Radio, Two Way Radio Earpiece(4 Pack)

1 pin 2.5 mm; compatible with Retevis RB48 RT49 RT49B RT49P two way radio ^^ Clear sound; 2 way radio earpiece with sensitive mic to pick up clear nature sound for smooth transmitting; no distortion or attenuation ^^ VOX function; there is a free switch between VOX and PTT; greatly liberate your hands in work and activities ^^ Acoustic tube walkie talkie earpiece; durable sound tube and soft earplugs make it more comfortable and snug to wear; make your calls more private ^^ Coil tube design; one section of the walkie-talkie earphone wire is a telescopic design; suitable for people of different heights and shapes in the team