from the seller's web site...
"Sunglasses DVR Camera is the newest and most advanced spy camera with built in Video Recorder in the world. Unlike other device of this type, This sunglasses records everything you see and hear, without connecting to MP4 or other Recording source.
Cool hands free video recording any time any where. These quality Polarized lens sunglasses have a built-in 1.3 mega pixel self recording color camera and real time (30 fps) digital video recorder. Internal 2GB memory and li-polymer rechargeable battery records for 5 hours continuously.
Up to 2GB Micro SD card (not Included) offers even more recoding time and easy storage of Audio and video. Stereo recording insures great sound quality to go along with the action. Ideal for outdoor activities such as bike riding, sporting events, snow skiing, tennis, and other events and SURE for SPY and INVESTIGATION." (more)
Why do I mention it?
So you know what you are up against!