EL Backlight: An electro-luminescent panel causes the entire face to glow for easy reading. Includes an After-Glow feature that keeps the EL backlight turned on for a few seconds after the light button is released. Shock Resistant: Shock-resistant construction protects against impact and vibration. Neobrite A luminous coating on hands and hour markers provides long-term illumination in the dark after only a short exposure to light. World Time: Displays the current time in major cities and specific areas around the world. Stop function: (1/100 - 1HR) Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 1 hour. Yacht Timer: The yacht timer is used to time the start of regattas. The countdown period can be set from 1 to 10 minutes. An accustic signal is ermitted after each minute has elaapsed and then once a second for the last ten seconds. Timer: Counts down from a start time specified by you. The value indicates the number of timers available, while the time figure indicates the maximum starting time. R indicates Auto Repeat, which automatically restarts timing at the end of each countdown. 5 Daily Alarms: The daily alarm reminds you about recurring events with an acoustic signal at the time you have set. You can also activate hourly time signal that indicates each full hour. This model has 5 independent alarms for flexible reminders of important appointments. Snooze Feature: Each time you stop the alarm, it sounds again after a few minutes. 3 Years - 1 Battery: One battery will supply your watch with the power it needs for about 3 years. Full Auto Calendar: Allowances are made automatically for months of different lengths, in case date corrections for leap years are required. 12/24-hour Timekeeping: Times can be displayed in either a 12-hour or 24-hour format. Mineral Glass: Hard glass resists scratching. Leather strap. Water Resistant: 200 meters.