Feature: High quality, good performance in transmitting voices and has long service life. The throat microphone eliminates most background noise, more convenient to use. The ear bud is easy and comfortable to wear, the best choice for long hour working. The ergonomically designed ear cushions ensure good fit over a wide range of ear sizes. Transparent tube, you may put the throat mic under the collar and the transparent tube is not easily found by the others. Dual-mic transponders are designed on both the left and right side, sound is absorbed via vibrations from the throat and transferred to the radio which is then converted into recognizable voice frequencies. Specification: Condition: 100% Brand New Material: ABS Speaker Size: 12mm Sensitivity: 120dB, +/-3dB Impedance: 32ohms, +/-15% Audio Input: 200mW Resonance Frequency: 400Hz +/-20% Microphone Size: 6.0*5.0mm Frequency Response: 20-16000 Hz Sensitivity: -37.56dB, ± 2dB Impedance: 2.20kW &1kHz S/N ratio: Min.: -56dB &1.1kHZ Size: Approx. 18.2*14.7*2 cm / 7.2*5.8*0.8 in Weight: Approx. 72g / 2.5 oz Notice: Before Purchasing, make sure it fits your transceiver. Model Series: Number: for BAOFENG UV5R/plus UV5RA/plus UV5RE/plus UV3R+Plus UV5RB UV5RC UV82, UV-8D, UV-B5, UV-B6, GT-3, A52, UV-6R, UV-5X, BF-F8+ BF-K5 BF-A5 BF-480 BF-490 BF-320 BF-V6 BF-V8 BF-888s BF-666s BF-777s BF-999 BF-888 BF-777 BF-658 BF-668 BF-530 BF-520 BF-658 UV6 V85 For TYT