Functions: Timed alarm, stopwatch, luminous, 12 / 24-hour, week display, hourly Waterproof: WR50M swimming waterproof Movement: LCD digital electronic movement Case material: High quality ABS plastic case Strap Material: Silicone Strap Mirror material: thickened and hardened resin mirror Bottom cover material: stainless steel Buckle material: stainless steel Suitable for the crowd: children men and women 8211: Net weight: 27.2g, Watch full length: 225mm Dial diameter: 33.9mm Dial thickness: 14.2mm Strap width: 15.2mm Movement: LCD digital electronic movement Japanese battery model: CR2025 9112: High-quality electronic movement Japanese model CR2025 Net weight: 26.7g Watch full length: 215mm Dial diameter: 34mm Strap width: 16.3mm