Features Adopts X Y standard stereo pickup technology clear and stable sound image localization Built in 20dB and 10dB sensitivity switch satisfies different recording occasions Built in low cut filter switch effectively reduce the environment noise with low frequency interference Built in shock absorbing structure effectively reduce the mechanical vibration noise Use anti interference radio frequency RFI shielding technology A low power recall function allowing users to replace the battery completely ready to do Specification Model SGC 698Transducer Principle Back Electret CondenserPolar Pattern Cardioid stereoFrequency Response 30Hz 16KHzSensitivity 44dB ± 3dB 0dB 1V Pa at 1KHz Maximum SPL 130dB THD≤1 0 at 1KHz Low Cut 80Hz 10dB octaveOutput impedance ≤200ΩPower Requirement 3V CR2032 button battery Packing List 1 x SGC 698 Microphone1 x Windshield1 x Flannel Bag1 x User s Manual