Casio Digital Watch, Retro Design, A100WEF-1A, Men's, International Model, Black, Urethane Strap

[Dimensions] Case size (height x width x thickness): 40.7 x 32.7 x 9.2 mm (approx.), Strap: width approx. 16 mm (buckle side) - 20.5 mm (case side), lug width approx. 18 mm, wrist circumference: 14.5 - 21.5 cm (approx.), weight: approx. 26 g [Materials] Case: Resin, Band: Polyurethane, Crystal: Resin glass [Waterproof performance] Waterproof for daily life [Accessories] Japanese instruction manual (copy), instruction booklet in a foreign language, plain generic box (not a Casio box) This is a resin band model from the "A100" series, a复刻 (reissue) of the "F-100," Casio's first resin-case model released in 1978. The resin band, combined with a silver and band-colored face, creates a design that is both casual and cool. It features functions such as a stopwatch and LED light, and the four front buttons add a design accent. 【Main Watch Functions】 ●Stopwatch (Measurement unit: 1/10 second, Measurement range: 59 minutes 59.9 seconds (60-minute counter)) ●Time alarm/hourly time signal ●Auto calendar ●LED light ●Accuracy: Average monthly difference ±30 seconds ●Battery life: Approximately 3 years (This is the value when the battery is replaced with a new one. The battery pre-installed in the watch is a monitor battery used to check the watch's functions and performance, so its battery life will be shorter.)