Nww Portuguese seven IW500705 (old Portuguese seven model is IW500107, this is different two models) series: Portugal 52010 automatic machinery 42.3 mm men's oscillation frequency: 28800 hourly oscillation Number of times Power Reserve: 168 hours Appearance diameter: 42.3 mm case thickness: 14.5 mm Case Material: Steel Dial Shape: Round Mirror Material: Sapphire Crystal Glass Crown Material: Stainless Steel Strap Color: Black Strap Material: Cowhell Buckle type: folding buckle Thyme material: stainless steel back through: back through waterproof depth: 100 meters