Sensor: Condenser microphonePolar mode: cardioid towards the microphoneFrequency response: 35-18KHz+/-3dbSensitivity: -42dB +/-1db/db0=lvpa,1khzNoise ratio: 76 decibelsStreet type: 3.5MM interfaceProduct weight: 22*81mm, weight 86gBY-M1 is a high-quality microphone. The battery is plug-and-play. Don't worry about the battery. The external design is equipped with a small shock-proof frame that comes with it to effectively reduce the vibration caused by the recording. It comes with a windproof cover.