Casio Vintage Series Heritage Colors Digital Watch with Metal Gunmetal and Overseas Model CA-500WEGG-9B 8-Digit Calculator, Unisex, Band, Yellow,

The design pays homage to the CQ-1, a multi-function calculator with a clock function that Casio released in 1976. [Size] Case size (length x width x thickness): 43.2 x 34.4 x 8.2 (approx. mm), Strap width: approx. 15 (buckle side) - 21 (case side) mm, Lug width: approx. 18 mm, Band size: 150 - 205 (approx. mm), Weight: approx. 53 g [Material] Case: Resin, Band: Stainless steel, Crystal: Resin glass [Waterproof performance] Waterproof for daily life [Accessories] Japanese instruction manual (copy), foreign language instruction booklet, plain generic box (not a Casio box) [Band size adjustment method] Free sliding type (requires separate tool) [Major functions] ● 8-digit calculation function ● Dual time ● Stopwatch (1/100 second, 24-hour counter, with split) ● Time alarm and hourly signal ● Full auto-calendar ● Operation sound ON/OFF switching function ● 12/24-hour display switching ● Accuracy: Average monthly difference ±30 seconds ● Battery life: Approximately 5 years (*This is the figure when a new battery is installed after purchase. The battery installed in the watch at the time of purchase is a monitor battery installed at the time of manufacture to check the functions and performance of the watch, and will run out after a short period of time.)