| | 1/100-second stopwatch |
| | Measuring capacity: 23:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times |
| | 12/24-hour format |
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| | Accuracy: ±15 seconds per month |
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| | Approx. battery operating time |
| | 5 months on ML2016 (Operating period with normal use without exposure to light after full charge) 10 months on ML2016 (Operating period when stored in total darkness with the Power Save function ON after full charge) |
| | Auto-calendar (to year 2039) |
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| | Battery power indicator |
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| | Countdown timer |
| | Measuring unit: 1/10 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments) Other: Auto-repeat |
| | Daily alarms |
| | 3 independent daily alarms |
| | Dive time and surface interval measurement function |
| | Dive time: 1 second increments, up to 23:59'59 Surface interval: 1 minute increments, up to 23:59' Memory capacity: One set of data (dive time and dive start time, surface interval) |
| | Electro-luminescent backlight |
| | Full auto EL light |
| | Hourly time signal |
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| | ID function |
| | c Card Number (built-in title, 16 characters and 10 digits), Passport Number (built-in title, 16 characters and 10 digits), Blood Type (RH factor/ABO type) |
| | Low temperature resistant (-20°C) |
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| | Power Saving |
| | (Turns off the display when the watch is left in the dark) |
| | Regular timekeeping |
| | Hour, minutes, seconds, am/pm, month, date, day |
| | Shock resistant (G-SHOCK) |
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| | Site function |
| | Current time in 10 sites (preset with diving sites), 14-character site name, daylight saving on/off, GMT differential |
| | Solar powered |
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| | Size of case / total weight |
| | GW-205K ...... 52.0 x 49.6 x 17.7 mm / 82.2 g |