The UVI is a simple measure of the UV radiation level at the Earth's surface. It has been designed to indicate the potential for adverse health effects and to encourage people to protect themselves. The values of the Index range from zero upward and the higher the Index value, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur.
Everyone is exposed to ultraviolet (UV) radiation from the sun. Small amounts of UV radiation are beneficial to people, and play an essential role in the production of vitamin D. However, overexposure to UV radiation is responsible for two major public health problems: skin cancer and cataract.
Staying out of the sun, either indoors or in shaded areas, during the four hour period around solar noon when UV radiation levels are highest is an effective means of protection. It should be combined with using clothing, hats and sunglasses. Sunscreen should be applied to parts of the body that remain exposed, like the face and hands. However, sunscreen represents a last line of defence, and should never be used to prolong the duration of sun exposure.
The basic sun protection messages :
- Limit exposure during midday hours
- Seek shade
- Wear protective clothing. Wear a broad brimmed hat to protect the eyes, face and neck
- Protect the eyes with wrap-around-design sunglasses or sunglasses with side panels
- Use and reapply broad-spectrum sunscreen of sun protection factor 15+
- Protect babies and young children
TECHNICAL SPECIFICATIONS :
Current Time Mode
Hour, minute and second
Month, day, day of week and year
12 / 24 hour format selectable
Month-day/Day-month selectable
Auto calendar from year 2000 to 2099
Hourly Chime on the hours
UV Index Mode
Display range (bar segment) : 0 to 15
Measuring range (numeric) : 0 to 25
Resolution (bar segment) : 1UV Index
Resolution (numeric) : 0.1 UV Index
Alarm : 2 UV Index Alarms
Color Code : 4 colors (green, yelow, red and purple)
Daily Alarm Mode
Daily Alarm : 1 daily alarm
Alarm Duration : about 30 seconds
Chronograph Mode
Resolution : 1/100 second
Counting range : 9 hours, 59 minutes, 59.99 second
Measuring mode : Elapsed time, accumulative elapsed time and lap time (1 lap only)
Timer Mode
Resolution : 1 second
Setting limit : 23 hours, 59 minutes, 59 seconds
Alarm sound : One beep at the 5,4,3,2 and 1 second(s)
Alarm sound : 'beep-beep-beep at O second
Alarm duration : about 10 seconds
Other
Electro-luminescent back light
Waterproof