Q: What are the product functions? Running seconds, alarm clock, luminous, hourly hour, day of the week display, 12/24 hour system, WR30M waterproof life Q: The material of the product: A: High-quality ABS plastic case, high-quality PU plastic strap, thick stainless steel bottom cover, thick stainless steel buckle, thick hardened resin mirror. Q: How about the waterproof performance of the product? A: All support 30M life waterproof, and do not support entering hot water vapor. Q: How about the product parameters? A: High-quality electronic movement with high-quality battery LR2025 Net weight: 39.1g Watch full length: 250mm Dial diameter: 43.7mm Dial thickness: 16.7mm Strap width: 22.98mm Drop shipping Support !Small Wholesale Discount Support!