Features: MEMS Technology: Utilizes MEMS technology to provide precise recording. Low power consumption design: Saves energy and extends usage time, suitable for long time recording and transmission. For easy connection to various embeddedly systems or development boards. INMP441 Omnidirectional Microphone Module: Omnidirectional performances to capture sound. I2S Connection Adopts digital I2S to transmit high-quality digital auditory. Small and lightweight, easy to integrate into a variety of devices. Specifications: Model: INMP441 Adopt: MEMS Technology Diameter about: 2cm/0.79in Connection：I2S High sensitivity -26 dBFS Frequency response: 60 Hz to 15 kHz Low power consumption:1.4mA High PSR: -75 dBFS Package Type：Not Assembled/Assembled Package Includes: 1Set INMP441 Microphone Module note: Due to the problem of lighting effects there is certain tolerances in product, please understand. Please allow 0-1cm error due to the measurement.