Casio Pro Trek Black Watch PRG-250-1

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction. 【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary. 【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product. 【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Accuracy: Average monthly difference within ±15 seconds Basic functions: Hours, minutes, seconds, year, month, date, day of the week, moon graph/tide graph, barometric pressure trend, morning/afternoon (P)/24-hour display, fully automatic calendar (2000-2099), automatic summer time switching, position Measurement functions: Azimuth measurement range = 0° to 359° Azimuth correction function (2 points, north direction) Continuous measurement function for 20 seconds, bearing memory function, magnetic declination correction function, 4 azimuth graphics (east, west, north, south) Barometric pressure measurement function: Measurement range = 260hPa to 1,100hPa Display range = 260hPa to 1,100hPa Measurement unit = 1hPa Continuous pressure measurement (every 2 hours) Instant measurement Barometric pressure adjustment function Barometric trend graph Barometric pressure difference graphic Barometric trend information Temperature measurement Functions: Measurement range = -10.0°C to 60.0°C Display range = -10.0°C to 60.0°C Measurement unit = 0.1°C Instant measurement, temperature adjustment function Altitude measurement function: Measurement range = -700m to 10,000m Display range = -10,000m～10,000m ( (10,700m within the range) Display unit = 5m Altitude measurement interval setting (2 minutes / 5 seconds) Reference altitude setting function Altitude difference measurement function (-3,000 to +3,000m) Altitude memory function (manual recorded data: Up to 14 pieces of altitude, month, day, and time can be memorized by button operation) Automatically recorded data: Maximum altitude, minimum altitude, cumulative ascent altitude, cumulative descending altitude Sensor accuracy: ● Direction sensor measurement accuracy = within ±10° (Accuracy guaranteed temperature range = -10°C to 40°C)　 Within ±2 scale on the direction graph ●Temperature sensor Measurement accuracy = within ±2°C (Accuracy guaranteed temperature range = -10°C to 60°C) Pressure sensor conditions (altitude) Altimeter Barometer When temperature is constant 0m to 6,000m ± (altitude difference x2% +15m) ± (pressure difference x2% +2hPa) 6,000m to 10,000m ± (altitude difference x2%) +25m) Effects of temperature changes 0m to 6,000m ± 50m per 10°C ± 5hPa per 10°C 6,000m to 10,000m ± 70m per 10°C Accuracy guaranteed temperature range Range = -10°C to 40°C Applying a strong shock or leaving it in an extreme temperature environment may have a negative effect on accuracy. Tide graph/Moon graph function: Tide graph display (with tide display) Moon shape display Moon phase display Date selection function Time selection function (tide graph only) World time function: Time in 48 cities (31 time zones) around the world Time display, summer time setting function Timer function: Measurement unit = 1 second Measurement range = 60 minutes Set unit = 1 minute Set range = 1 to 60 minutes (timer time) 1 to 5 minutes (reset time) Electronic beep every second from 10 seconds before time up Warning sound (with ON/OFF setting function) Stop watch function: Measurement unit = 1/100 seconds Measurement range = 23 hours 59 minutes 59.99 seconds (24 hour total) Measurement function = Normal measurement, cumulative measurement, split measurement, simultaneous measurement of 1st and 2nd place.The Japanese instruction manual will be sent to you by email.