Seiko Marinemaster

Dampened Seiko perfection in a beautiful case, let down by a micro-adjust clasp that marks its own links.

One of the best Seikos ever made. Gethin would pick it over the HBF1.

A boutique-exclusive champagne two-tone that unexpectedly won his heart: warm, well-finished and rare, though the bezel isn't the best and the clasp is the usual one.

His grail Marinemaster and favourite of the lot: he prefers it to the newer generation and to the SLA047.

A well-made, slim and comfortable skin-diver case that Gethin likes but does not love: overpriced at GBP 2,930, with a weak clasp and end-link integration.

High-quality, comfortable, 'wears like an SKX', but he doesn't think it's for him, and the stamped clasp is a sore point at this price.

The black one of the pair, which he slightly prefers: high-quality, comfortable, 'wears like an SKX', but not for him, and the stamped clasp is a sore point.

A stunning, understated purist's diver, the simplest of the four, with casework he calls exceptional.

Seiko's pinnacle in Gethin's eyes: flawless titanium finishing, a sublime bezel and a fantastic bracelet, all of it unreal.

Gethin's grail: the original Marinemaster 300, which he would take over the SLA023 'all day long'.

His favourite watch case ever on a British-racing-green dial, with buttery bezel action, his favourite handset and mental lume. He can't choose between it and his SLA023, and only the painted triangle worries him.

His grail and favourite Marinemaster: an unmatched Zaratsu case, the best bezel action and handset he's ever known and Christmas-tree lume. The Prospex X, the painted triangle and the unregulated movement are the only things stopping it being perfect.

Gethin's covered this on the channel. The written review and scores are on the way.