Shock Resistant Solar powered LED light (Super illuminator), afterglow Mobile Link (wireless linking using Bluetooth) Dual dial (home city time swapping) 1-second stopwatch Measuring capacity: 23:59'99 Measuring modes: Split time Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-hour increments, 1-minute increments) Daily alarm Battery level indicator Power Saving (hands stop to save power when the watch is left in the dark) Full auto-calendar (to year 2099) Date display Day indicator Regular timekeeping Analog: 3 hands (hour, minute (hand moves every 10 seconds), second) 3 dials (dual time hour and minute, dual time 24-hour, day) Accuracy: +/- 15 seconds per month Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light to light after charge) 24 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)