The mini pinhole camera is in the center of the eyeglass frames so you can record exactly what you are looking at. With the hidden eyeglasses camera you can record High resolution video (640 x 480 @25fps) with one push of a button. These spy glasses will keep a video record of everything you see. The spy camera video is saved directly to a micro sd card inside the glasses. Spy camera eyeglasses are great for sporting events, meetings and your next covert job. Simply connect to your PC (No Mac) and charge the built in battery for approx 2 Hour. Then you can start using your hidden spy camera glasses. Push the hidden button on the side of the frame to begin recording or change the mode and push the button to take a still picture. You will be able to store about 75 minutes of video on the included micro sd card and play back the video on any pc using windows media player, VLC, or KM Player. The internal battery will last approx. 45 Minutes of constant recording.