●[Product size]●Actual item approx. 4.2φ x (thickness) 1.04cm・Arm size approx. 15-19cm・Body weight=approx. 60g●[Product materials]●Case=stainless steel, glass=curved hardlex, band= Cowhide leather [In the product ●Reinforced waterproofing for daily life (10 atm) ●Average monthly difference ±15 seconds ●Battery life approximately 3 years (monitor battery is used at the time of delivery) ●Stopwatch function (1/20 second measurement 12 hours meter) )●Buckle type●[Country of origin]●JPN: Japan