1.Electronic noise reduction - With electronic active noise reduction and sound collection technology, this earphone provides clearer, natural sound and protection for your ears.2.chip protection - This headset chip is well protected by the film layer, can provide higher defense, mold, dust and moisture.3. Comfortable to wear for a long time, the earmuffs and microphone are easy to stick to the surface of the helmet with the tape provided.4. The flexible coiled cable provides you with the appropriate length for use. Motorcycle PTT is easy to use while you are driving5. Suitable for police officers, people wearing helmets or other motorcycle enthusiasts.Specification:Product Name: Motorcycle Helmet HeadphonesPlug: Kenwood 2-pinSpeaker Specifications:Size: 36mmSound pressure: 90db±3dbImpedance: 32 Ω±15%Audio: 200mWMicrophone Specifications:Frequency: 20-16000HZSensitivity: -36dB±2dBImpedance: 2.2kΩScope of application:for Hytera Radio:TC-268,TC-268S,TC-270,TC-270S,TC-368,TC-368S,TC-370,TC-370Sfor Kenwood TH Series:TH-D7,TH-F6,TH-F7,TH-G71,TH-K2,TH-21,TH-22,TH-25,TH-26,TH-27,TH-28,TH31AT ,TH41AT,TH-42,TH-45,TH-46,TH-47,TH-48,TH-55,TH-G71,TH-75,TH-77,TH-205,TH-215,TH-225 ,TH-235,TH-315,TH-415for Kenwood TK Series:TK-208,TK-220,TK-240,TK-248,TK-250,TK-260,TK-270,TK-308,TK-320,TK-340,TK-348,TK -350,TK-353,TK-360,TK-370,TK-372G,TK-373G,TK-378G,TK-388G,TK-430,TK-431,TK-2100,TK-2101,TK-2102 ,TK-2107,TK-2118,TK-2160,TK-2201,TK-2202,TK-2206,TK2207,TK-3100,TK-3101,TK-3102,TK-3107,TK-3118,TK-3160 ,TK-3201,TK-3202,TK-3302U-K,TK-3206,TK3207,TK-3312,TK-3360,TK-3402U16Pfor BAOFENG Radio:UV5R,UV8,UV8D,UVB5,UVB6,A52 UV5RA,UV5RC,UV5RD,UV5RE,UV5RE+,F8,F8+,BF-480/490/320/V6/V7/V8/658/520/530/999 /888/777/666s/777s/888s/F8+/A5/388Afor POFUNG Radio:UV-A52,UV-82,UV-8,UV-6,UV-5R,888s,5RAMaterial:ABS+Metalcolour:BlackPackage Contents:1 x Motorcycle helmet headsetOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.