Casio AQ-S810W-1BV Men's Solar Analog-Digital Watch, black

[Size and Weight] Case size (height x width x thickness): 52.2 x 46.6 x 13.8 (approx. mm), Strap: width approx. 21 (buckle side) - 28 (case side) mm, lug width approx. 18 mm, wrist circumference (maximum) 215 mm, weight: approx. 39.5 g [Materials] Case: Resin, Band: Polyurethane, Crystal: Resin glass [Waterproof performance] 10 ATM water resistance [Accessories] Japanese instruction manual (copy), instruction booklet in a foreign language, plain generic box (not a Casio box) 【Main Features】 ●World Time: Displays the time in 48 cities worldwide (31 time zones, with daylight saving time setting function) + UTC (Coordinated Universal Time), with a function to swap home city ●Stopwatch (1/100 second, 60 minute counter, with split function) ●Timer: Timer for interval measurement with up to 2 time settings (set unit: 5 seconds, maximum set: 99 minutes 55 seconds, measured in 1 second increments, with repeat function (settable from 1 to 10 times)) ●5 daily alarms and hourly time signal ●LED light (with afterglow function, afterglow duration switching (1.5 seconds/3 seconds)) ●Full auto calendar ●Operation sound ON/OFF switching function ●Power saving function (in dark places, the display turns off after a certain period of time to save power) ●Indicator display ●12/24 hour format display switching ●3 display patterns (month and day display, time display, day of the week display) ●Multilingual day of the week display (6 languages: English/Portuguese/Spanish/French/German/Italian) ●Operating time from full charge without solar power generation: With functions in use: Approximately 10 months; In power saving mode: Approximately 23 months ●Average monthly deviation: ±30 seconds