Lug size 20mm
This is a sapphire glass crystal
and 19 for seiko 6117 ( one hour and one minutes )
Please contact us for you watch crystal we can find
SWISS Made Glass Crystal Seiko diver 6306-7001 6306-7000 Lug size 20mmReplacement New Swiss crystal for Seiko case models listed below. This is a mineral glass crystal. It is an exact fit for your Seiko 6309: 6309 7040, 6309 7049, 6309 7290, 6309 729A, 6309 729B 6306: 6306 7000, 6306 7001, 7548: 7548 7000, 7548 7009, 7548 700A, 7548 700B, 7548 700C, 7548 700F, 7548 700H, The diameter is 320 mm. Watch NOT included. Please do not hesitate to contact us if you have any further questions. Please look at our other listings,