Seiko] I Put an Anti-Reflective Sapphire into my Seiko 5 by myself as a reward for it being +/- 0 seconds at the end of two months. Love this watch. : r/Watches
Single Dome Flat Crystal Glass for Seiko 5 7S26-02J0 SNK803 SNK805 SNK807 SNK809 | eBay
Sapphire Double Dome - SNK809 - 30mm - DLW WATCHES