CASIO Quartz Watch Vintage Series Unisex Dual Time White Overseas Model Analog-Digital AQ-230A-7DMQ

[Dimensions] Case size (height x width x thickness): 38.8 x 29.8 x 8.1 (approx. mm), Strap: Width approx. 15 (buckle side) - 20.5 (case side) mm, Lug width approx. 18 mm, Band size: 140-205 (approx. mm), Weight: approx. 47 g [Materials] Case: Resin, Band: Stainless steel, 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) [Band size adjustment method] Free slide type (separate tool required) 【Main Functions】 ●Dual Time ●Stopwatch (1/100 second, 60-minute timer) ●Time Alarm/Hourly Time Signal ●Auto Calendar ●12/24-hour format switching ●Accuracy: Average monthly difference ±30 seconds ●Battery life: 3 years (This is the value when the battery is replaced with a new one. The battery that comes pre-installed in the watch is a monitor battery to check the watch's functions and performance, so its battery life will be shorter.)