Specifications Case / bezel material: Stainless steel One-touch 3-fold Clasp Solid Band Stainless Steel Band Shock Resistant Neobrite Mineral Glass Screw Lock Back 200-meter water resistance Tough Solar (Solar powered) Double LED light LED light for the face (Super illuminator, full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal Manual receive The latest signal reception results Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents) Measuring capacity: 00'00''00~59'59''99 Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 100 minutes Countdown start time setting range: 1 second to 100 minutes (1-second increments, 1-minute increments) 5 daily alarms (with countdown) Hourly time signal Battery power indicator Power Saving (hands stop to save power when the watch is left in the dark) Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping Analog: 2 hands (hour, minute (hand moves every 20 seconds)) Digital: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month (with no signal calibration) Approx. battery operating time: 11 months on rechargeable battery (operation period with normal use without exposure to light after charge) 28 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Size of case : 51.8×44.5×14.2mm Total weight : 175g Diameter:44m