Hytera EH-01 C-type listen only earpiece

Receive-Only C Style Earloop with 3.5mm
jack plug (for use with PTT & MIC cable)

C-Style Earpiece (Receive-Only) (3.5mm Audio Plug)
Ergonomically designed C-style earpiece (Receive only) with 3.5mm jack plug,
to be used with PTT&MIC cable or remote speaker microphone