Size: have at least 2GB free on your USB drive. That will give you 40min of recording time.

Speed: USB 2.0 or better.

Format: should be FAT32 (MS DOS). If you're not sure how to format your drive, staff can do it for you prior to recording.

Brand: Sandisk has yielded good results, but any reputable brand will do.

Wear medium colors for proper video exposure and contrast. Avoid black, white, an dark gray.