Thermometer UV Sensor Clip Watch with Tide Function. The Thermometer UV Sensor Clip Watch with Tide Function offers digital UV detection, digital tide function, and digital thermometer function. Other features include stopwatch, alarm, day/date, sun-glow laser film display, moon-glow EL dial light, and aluminum carabiner. Lightweight plastic case with rubber fob/case-back protector. This watch is 165 feet water resistant. Order yours from Brookstone today!