5 functions: month. date. hour. minute.second
UV index meaturement from 0-20(0.5 increment) UVA and UVB.
30 second alarm sound, selecable 12/24 hour formal
4-year calendar, alarm, chime enable/disable, LCD Test
how to check UV index(UVI) : press the swith "U" and face the UV sensor direct under the sunlight. LC display shows the UV index reading