Dial Material: Alloy Strap Material: Silicone Buckle shape: Needle buckle Watch weight: 47g Dial size: 40mm diameter The thickness is about 9mm Strap width: 20mm Maximum wearable wrist circumference 22.5cm Movement: Quartz movement This product does not have a waterproof structure. Please remove the watch when washing hands or sweating heavily to prevent water from entering.