SPECIFICATIONSBrand Name: ZIXUANBuilt-in Battery: NoCertification: NoneCommunication: WiredDiaphragm: S-MallHigh-concerned chemical: NoneOrigin: Mainland ChinaPolar Patterns: CardioidSet Type: Single MicrophoneStyle: Headset MicrophoneTransducer: Condenser MicrophoneUse: Conference MicrophoneAwesome Headset Mic For SHURE AKG Saomson Wireless System!You want a sweet-sounding lavalier mic for a wireless system....and you don't want to spend half your paycheck getting it.  Ding ding ding — you want the best-selling Headset mic. It works for Shure wireless transmitters, so it's compatible with some of the best wireless systems you're gonna find anywhere. That's a bonus. And most of all, it just plain sounds good. TV broadcasters, emcees, and theater actors are really into this mic, because it keeps them sounding clear. This particular mic has a focused cardioid pickup pattern, so you get the speaker's voice — and not a bunch of other crap — going through the PA system when you don't want it to.Good pick here :)Professional PowerIndustry-standard sound quality along with surprising durability make this mini headset microphone ideal for just about any vocal sound and speech applications. Enjoy freedom of movement, discreet operation and exceptional performance fit for any occasion. The mini ear-hanging headset microphone answers the demand for affordable, innovative and reliable headset microphonesLightweight, Comfortable & DurableErgonomic, flexible and thin. This headset is ideal for applications requiring maximum performance and mobility. Wide bandwidth omni-directional electret condenser mic ensures clean transparent audio and enhanced vocal pickup with improved gain. The beige flesh-toned color blends in with various skin types. Uses a standard mini XLR 4pin TA4F plug connector. Durable thin-metal frame can be easily adjusted to fit any user. The headset is also designed to fit comfortably for users wearing glasses, hats, or headphones.Specification: Signal to Noise Ratio: TBD Element: Electret Condenser Polar pattem: Cardioid  Frequency Range: 50 Hz - 17,000 Hz Max SPL: 130 5dB SPL Impedance : 1,500 Ohms +/- 30% (at 1 Khz) Max Input SPL: 28dB Operating Voltage: 1.0V - 10V DC Cable Length: 3 M Color: Skin Microphone features a Cardioid pickup pattern. Compatible For Shure Body Pack Transmitter Models:  L1, 11, LX1, SC1, U1, UC1, UT1, T1, ULX1, UR1, PGX, SLX... For ALL XLR 3PIN TA3F.