Measurements:Width approx. 11mm19 cm (7.48") for wrist 17-17.5cm (6.69"-6.89")20 cm (7.87") for wrist 18-18.5cm (7.08"-7.28")21 cm (8.27") for wrist 19-19.5cm (7.48"-7.68")22 cm (8.66") for wrist 20-20.5cm (7.87"-8.07")* 316L Stainless Steel Edtion available.