high quality speaker microphones,walkie talkie ear

Speaker Microphones / Microphone Features: 1) Models: SM-1, EMP-108, EMP-107C, EMP-103VOX, ECM-112, EMP-117 2) Comfortable ear hook can be rotated to the left or to the right 3) With PTT / VOX button to control mic available 4) High receiving capability 5) Popular and unique style 6) Portable and comfortable 7) Earset for handheld transceivers with voice-activated throat mic and PVC air pipe 8) Compatible with various kinds of transceivers 9) Speaker impedance: 32ohm±15% 10) Sensitivity: 101±2dB 11) Mic condenser noise cancellation 12) Frequency response: 30Hz - 18KHz 13) Mic impedance: 2,200ohm 14) Mic sensitivity: -60dB±3dB at 1kHzInner packing: PolybagsOuter packing:Cartons 1. ROHS approval 2. ISO9001:2008 approval 3 CE approval