Produced by SJ .BRF New Product: Breitling Challenger Series OT5 .Technical Specifications .Movement: Automatic winding mechanical movement .Functions: Hour hand, minute hand, small second hand, and date .Case: 44mm diameter, matte stainless steel case .Dial: Blue dial with metal hour markers filled with Superluminova luminous material .Crystal: Sapphire crystal with anti-reflective coating .Water Resistance: 300 meters .Bracelet: Super elastic black synthetic fabric woven strap .Buckle: Pin buckle, matte stainless steel .Recommended: Men's multifunctional mechanical wristwatch