This watch is a custom-made item. Please inform customer service of your specific style before purchasing; otherwise, we will send a random style. Materials: Case, case back, and strap = Stainless steel; Crown = Stainless steel, resin; Crystal = Crystal glass; Dial = Brass, various natural gemstones (January: Garnet / February: Amethyst / March: Aquamarine / April: Diamond / May: Emerald / June: Moonstone / July: Ruby / August: Peridot / September: Sapphire / October: Pink Tourmaline / November: Citrine / December: Tanzanite) Case dimensions (approx.): 34mm x 30.4mm x 7.7mm; Bezel diameter: 28mm; Dial diameter: 22mm Wrist circumference dimensions (approx.): S = 14cm, M = 16cm, L = 18cm Packaging dimensions (approx.): 9.6cm x 9.6cm x 7.5 cm Movement: Japanese quartz movement (accuracy within ±20 seconds per month) Water resistance: 30 meters Made in China (packaging made in Japan)