Fast Delivery DigiKey customers in the United States can choose from a wide range of fast, reliable delivery options, with shipping rates starting as low as $4.99. Payment Types Payment in Advance by Wire Transfer Marketplace Product More Products From Fully Authorized Partners Average Time to Ship 1-3 Days. Please see product page, cart, and checkout for actual ship speed. Extra Ship Charges May Apply Product Training Library > Ultrasonic Applications for Knowles Electret and MEMS Microphones Ultrasonic Applications for Knowles Electret and MEMS Microphones 0 - Immediate 105 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate 0 - Immediate Related Product Highlight FG Series Subminiature High-Performance Electret Microphone The FG Series from Knowles is a subminiature electret microphone that is compact in size and easy to assemble. They are ideal for miniature and covert applications. Related Articles and Blogs Build a True Wireless Fitness Hearable—Part 2: Audio Processing Use an advanced audio codec that combines low power and extensive functionality to deliver high quality audio and long battery life in fitness hearables. Related Product Training Modules Microphone Interfaces Digital microphones provide an upside to end applications and enable intelligent audio solutions with the introduction of Knowles’ multi-mode microphones. Introduction To Microphones Introduction to the terminology and anatomy of microphones to help readers properly identify the correct microphone for an application's needs. Need Help? Thank you! Keep an eye on your inbox for news and updates from DigiKey! Please enter an email address I agree to receive marketing emails from DigiKey. I understand that I can withdraw consent at any time. Please review our Privacy Notice . Please accept the checkbox Subscribe Information Contact and support