Basic Information

• Case size (L× W× H): 42.7 × 39.1 × 12.3 mm
• Weight: 111 g
• Case and bezel material: Stainless steel
• Band: Solid stainless steel band One-touch 3-fold Clasp
• Water resistance: 50-meter water resistance
• Time adjustment: Radio-controlled Watch; Multi band 6 Bluetooth: Connects to a smartphone and automatically adjusts the time
• Power supply and battery life: Tough Solar (Solar powered)

Smartphone Link/App Connectivity Features

• Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®)
• Apps: CASIO WATCHES
• App connectivity feature: Auto time adjustment Easy watch setting Approximately 300 world time cities + user-added point Time & place Reminder Phone finder

Exterior

• Glass: Mineral Glass
• Back plate: Screw Lock Back
• Compatible band size: 150 to 205 mm

Watch Features

• World time: 5 World time 39 time zones (39 cities +coordinated universal time), auto summer time (DST) switching, home city/world time city swapping
• Stopwatch: 1/100-second stopwatch Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, split time, 1st-2nd place times
• Timer: Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
• Alarm/hourly time signal: 5 daily alarms (with 1 snooze alarm) Hourly time signal
• Light: LED backlight (Super illuminator) Full auto LED light, selectable illumination duration (2 seconds or 4 seconds), afterglow
• Light color: LED:White
• Calendar: Full auto-calendar (to year 2099)
• Mute feature: Button operation tone on/off
• Energy saving feature: Power Saving (display goes blank to save power when the watch is left in the dark)
• Battery display/alert: Low battery alert
• Run time: 11 months on rechargeable battery (operation period with normal use without exposure to light after charge) 22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
• Accuracy: Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
• Other features: 12/24-hour format Date/month display swapping Day display (days of the week selectable in six languages) Regular timekeeping: Hour, minute, second, pm, month, date, day
• Time adjustment details: Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz 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 The latest signal reception results