http://www.liveultrahealthy.com/
Goes on sale April 2015
See also VitaminDWiki
- Yet another UV monitor for vitamin D to avoid – Sunsprite
- A wrist-watch which measures UVA plus UVB - should NOT be used to increase vitamin D - June 2014
- UVA decreased vitamin D levels (again) – July 2013
The high UVA vs UVB in the early morning/late afternoon might actually DECREASE the vitamin D levels - Overview Skin and vitamin D which has the following chart - UV while STANDING
When solar elevation is about 45 degrees the Vitamin D will be over-estimated by about 3X if not measure UVB alone