Features： [Good Fitness] Specially designed replacement for OSMO action camera, can make the sound recorded by the camera clearer in playback. [Practical Design] With 3.5mm TRS input port for microphone, and USB ports for connecting with camera and power cord, allowing charging and recording sound at the same time. [Wide Application] A piece of simple photography accessory, a nice helper for video recording, interview, etc. [Compact Size] Mini size and weights only 8g, does not take up much storage or increase carrying burden, convenient for storage and carrying. [Easy to Use] No complicate installation , quick to install; fit well with the camera, stable and not easy to get loose. Specifications： -Brand: BOYA -Model: BY-OA1 -Color: Black Material: -Product Size: 2.7 * 2.3 * 1cm/ 1.06 * 0.9 * 0.39inch -Product Weight: 8g/ 0.28oz -Package Size: 9 * 8 * 3.5cm/ 3.5 * 3.1 * 1.3inch -Package Weight: 31g/ 1.09oz Package List： 1 * Audio Adapter