Oregen Scientific UV Sensor
This item is very useful for determining your burn time in the sun dependant on your skin type. It is relatively simple to set up for an individual user.
Totally worthwhile if you are a person who works outside on a daily basis

Useful device in the end.
I have been using this device for some time now and discovered it to be a very useful product. The device appears to be well made. It registered UV rays from low to very high. It rates how long it will take to give you sunburn depending on your skin type and what power of sunblock you put on to protect yourself.

It helped with skin protection from the sun and its harmful UV rays which can cause premature aging, winkled skin and cancer. Sad but healthy golden tan don't help you in the long run. I supposed this device would be helpful toward people with pale milky skin then with those of darker complexion. But people of all colors suffered from sunburns and its painful consequences. It also helpful when you should reapplied your sunblock again. While not truely exact because sunblock wear off due to sweat and water, it will give a good estimate for you common sense to kick in.

Overall, an useful device for those who are careful about their skin and aware of the harmful UV rays that can caused damage to it.