Seiko Prospex 41.7mm Automatic Men's Watch
A mid-sized diving watch featuring a 41.7mm stainless steel case with 200 metres of water resistance, suitable for recreational diving and water sports. The dial presents a blue finish with Lumi Brite applied to the hands and hour markers, whilst a date window sits between four and five o'clock. A unidirectional rotating bezel allows precise timing of underwater intervals. The watch is powered by Seiko's Calibre 4R35 automatic movement, which includes manual winding capability and delivers approximately 41 hours of power reserve.
The watch comes mounted on a stainless steel three-fold bracelet secured with a push button clasp and extender link for wear over diving suits. The crystal is Hardlex, Seiko's proprietary hardened glass. This represents a straightforward tool watch approach to the Prospex line, prioritising functional diving credentials and reliable timekeeping over complications or elaborate finishing.
The Seiko Prospex 41.7mm Automatic Men's Watch is listed on WatchShopper as a men's 41.7 mm stainless steel automatic watch with a blue dial, a date display, a rotating bezel, mineral glass, and 200 m water resistance. It runs on the 4R35 calibre with a 41-hour power reserve and comes on a stainless steel bracelet. On 22 October 2026 the lowest UK price was £580.00 at TH Baker, in stock, with free delivery and 30-day returns. 4 UK retailers have it in stock, all at £580.00. With the voucher code GET50, Beaverbrooks brings it to £530.00.
WatchShopper has tracked the Seiko Prospex 41.7mm Automatic Men's Watch across 4 UK retailers for 30 days. In that time the lowest recorded price was £580.00 at Beaverbrooks on 22 September 2026, and the highest was £580.00 at Beaverbrooks. The average tracked price is £580.00.
| Lowest tracked price | £580.00 |
|---|---|
| Highest tracked price | £580.00 |
| Average tracked price | £580.00 |
| Current best price | £580.00 |
| Tracking since | 22 September 2026 |
At £580 this watch is on the cheaper side for a men's automatic watch with a 39–43 mm case: 34% of the 1,436 we track from every brand cost less. 72% of the 330 Seiko watches we track cost less than this one. This is the 13th cheapest of the 65 versions of the Prospex we list.
