Seiko’s GPS-linked Astron chronograph now comes in titanium with a crystal bezel. Every product is carefully selected by our editors. If you buy from a link, we may earn a commission. Learn more There ...

Japanese watchmaker, Grand Seiko, has revealed ... users can expect to enjoy 100m of water resistance from that titanium case. That's broken only by a dual-curved sapphire crystal on the top ...

The latter is perhaps best know for the work of luxury watchmaking maison, Grand Seiko ... enjoy 100m of water resistance from that titanium case. That's broken only by a dual-curved sapphire ...