Not knowing what level of ultraviolet light one is exposed to can sometimes be dangerous considering the phenomenon of ozone depletion deteriorates everyday. The Corwell CUM-01 UV index meter adopts the WHO standard for ultraviolet index and displays the index number in a matter of seconds. Furthermore, the CUM-01determines the maximum amount of UV exposure time without getting sunburn based on input parameters of skin tone and SPF of sunscreen that is applied on the skin. The CUM-01 emits a beeping alert when the sunburn threshold is reached. As small as a matchbox, the CUM-01 can be carried around clipped on a belt or hung on the neck using the strip that comes with it. The CUM-01 detects and displays the ambient temperature as complimentary information for the user whenever and wherever he/she goes. In short, the CUM-01 is a perfect health companion under the sun.