Powered by Light, this Tough Solar runners watch can take you from track to field, walk to jog, run to sprint. Just about any activity you pursue. Strive to be the best you can be in the new STLS100. With 100M water resistance dual countdown timers for interval training, 100-hour stopwatch and 5 daily alarms, there's no denying this is one great workout companion. Black resin watch with orange accents and neutral dial.