Which Size Tudor Black Bay? (31/36/39/41)

M79600-0005 31.6mm case 9.6mm thick 37.8mm lug to lug 17mm lug width Cal. MT5201 w/ 50 hours power reserve 100m water resistance 91.1 grams $4,450 M79640-0003 36.6mm case 10.5mm thick 43.9mm lug to lug 19mm lug width Cal. MT5400 w/ 70 hours power reserve 100m water resistance 124.4 grams $3,825 M79660-0001 39.4mm case 12.1mm thick 47.3mm lug to lug 21mm lug width Cal. MT5602 w/ 70 hours power reserve 100m water resistance 154 grams $3,950 M79680-0004 41.5mm case 12.4mm thick 50mm lug to lug 22mm lug width Cal. MT5601 w/ 70 hour power reserve 100m water resistance 164.7 grams $4,900 717-569-5450