Personal UV Monitor
Think what makes this seem to me like a very useful gadget is last year when I shaved my head for the first time, then went on vacation and walked around all day under cloudy skies. Little did I know how bad a sunburn hurts on a bald head. - if I had this gadget maybe I would have put something like a bandana on my head eh?
Personal UV Monitor Monitors the current UV index and temperature, and calculates your recommended exposure time based on UV, SPF and your personal skin type.
For $20.99 its pretty resaonable
