RETEVIS K Air Guide Acoustic Tube Earphone Microphone, K

1. Microphone size: 6x2.7mm, Speaker size: 15mm
2. Microphone sensitivity: -38db +/- 3db, speaker sensitivity: 106db +/- 4db
3. Microphone frequency: 1khz
4. Microphone impedance: 2.2kohm, speaker impedance: 110ohm
5. A remote microphone with a push-to-talk button, you can edit anywhere.
6. The clear tube connecting the earplugs makes you look like a special agent or bodyguard and protects you from radiation.
7. The earplugs/speakers are close to your ears to keep your conversation private.
8. Cable length (Plug and Play): 100cm.
9. Cable length (PTT to speaker): 108cm.
10. Standard two-pin diameter: 3.5mm stereo ear (thimble). 2.5mm stereo microphone (bottom pin).
11. The distance between two needles: 11 mm.
12. Suitable for Kenwood KPG27D, KPG29D, KPG48D, KPG49, KPG55D, KPG49, KPG55D, KPG56D, KPG62D, KPG66D, Suitable for Retevis H777, 888S Plus, Suitable for HYT TC286,386,2685,3865,668, TC 278, etc.