FAST DELIVERY: Ship from USA STOCK,takes 2~3 bussiness days This mini condenser capsule provide wide frequency response and excellent voice quality.Its diameter is only 3.5mm YPA MM4 EARSET MIC A special ring on the boom avoid the sweat inpouring  the capsule and mic is  positioned at the corner  of the mouth 　 Soft materials be positioned at the back of your ear comfortably and firmly There is only 1 connector in MM4. FOR SHURE C4S Connector For SHURE Wireless Microphone Systems SHURE PGX1/SC1/SLX1/ U1/ULX1/UR1/UT1, TOA WM4300 Directional characteristics: Omnidirectional Principle of operation: Pressure Cartridge type: Back Electret Condenser Frequency range, ± 2 dB: 50 Hz – 20 kHz Sensitivity, nominal, ±3 dB at 1 kHz: 1 mV/Pa; -45 dB re. 1 V/Pa Equivalent noise level, A-weighted: Typ. 33 dB(A) re. 20 µPa (max. 37 dB(A)) Equiv. noise level ITU-R BS.468-4: Typ. 45 dB (max. 49 dB)B) S/N ratio, re. 1 kHz at 1 Pa (94 dB SPL): 61 dB(A) Total harmonic distortion (THD): < 1 % THD up to 123 dB SPL peak; < 1 % THD up to 120 dB SPL RMS sine Dynamic range: : Typ. 90 dB Max. SPL, peak before clipping: 135 dBdB Output impedance: 30 – 40 ohm Cable drive capability: Up to 300 m (984 ft) Power supply: For wireless systems: Min. 1.5 V – max. 12 V through YPA adapter. Connector: MicroDot Color: : Tan Microphone weight: 22 g Microphone diameter: 3.5 mm Cable length: 1.5 m Cable diameter: 1.6 mm Polarity: Positively increasing sound pressure produces positive going voltage on MicroDot pin Operating temperature range: : -10 to 45°C (14 to 113°F) We accept Visa, MasterCard, AmericanExpress,Discover,PayPal and echecks processed through PayPal. PayPal is the safer, easier way to pay and get paid online. The service allows anyone to pay in any way they prefer, including through credit cards, bank accounts, buyer credit or account balances, without sharing financial information.If you have any problem ,please contact us or leave message.   This item normally ships within 1-2 business days . Tracking information will be emailed to you once item ships... China Stock Delivery  takes 7-10 business days to USA and UK If you have special package requirement,please contact us or leave message. USA Stockck Delivery takes business days to USA by USPSand do not ship worldwide only USA. This item is IN USA STOCKCK   Return Policy y If item arrives non-functional or defective, you must contact us within 3 days for an exchange and we will send you a BRAND NEW replacement. Buyer must contact seller for RMA authorization before returning an item. Incorrect items must be returned within 7 days of receipt in order to receive the exchange. . The returned item must be in its original packaging with all documentation and accessories. Any dismantled, marked, or visibly defaced product by the buyer will VOID the item's return authorization. Warranty Policy If item becomes defective within the warranty period listed in the auction, please contact us. Buyer will be responsible for shipping of the defective unit back and forth. We will replace it with a brand new replacement. Shipping and handling is not refundable. Custom Tax The buyer is responsible for any applicable import duties and local taxes. Please verify with your customs before making your purchase. (Usually there is no custom tax, we will ship it out as gift.) Your satisfaction is our pride! Thanks for reading,we are glad to answer your any question P.S Feedback will be made after you receive your item, have a chance to look it over, and you have left feedback. Please keep communications open, If you do not call us and/or email us to give us the opportunity to work out any problems before leaving negative feedback.  Negative feedback should be your very last resort. It should never happen if you contact us and let us help you! Positive feedback is very important to us.  We try very hard to satisfy our customers, let us help you!