Bobby Calder's research showed that every extra syllable in a product's price decreases its chances of being remembered by 20%, something caused by the fact that a person's phonological loop -- a regulator of memory -- can only hold 1.5 to 2 seconds of spoken information.

CNN: Researching the business world

Users whose adventures span hours, and even days, will especially appreciate the loop recording mode that allows for continuous, non-stop recording between two memory cards, eliminating the hassle of manually restarting recording and swapping out memory cards.

ENGADGET: iON reveals Adventure and Air Pro 2 sports cameras, we go hands on