Seiko Mens Prospex Cobalt Blue Divers Watch SRPL51K1
This professional-grade diver features a striking cobalt blue dial with luminous hands and hour markers, ensuring legibility in low-light underwater conditions. The 41mm stainless steel case houses a reliable automatic movement offering approximately 41 hours of power reserve, whilst the unidirectional rotating bezel facilitates dive timing. A Hardlex crystal protects the dial, and the watch achieves 200 metres of water resistance for serious diving applications.
The matching stainless steel bracelet fastens via a fold-over clasp, providing secure wrist wear during active use. This combination of functional diver's specifications and considered design makes it suitable for both professional diving expeditions and everyday wear.
The Seiko Prospex SRPL51K1 is listed on WatchShopper as a men's stainless steel automatic watch with a cobalt blue dial, a date display, a rotating bezel, mineral glass, and 200 m water resistance. It has a 41-hour power reserve and comes on a silver stainless steel bracelet. On 23 October 2026 the lowest UK price was £580.00 at Goldsmiths, in stock, with free delivery and 14-day returns. That is above its 193-day tracked average of £570.00. With the voucher code EXTRA10, Goldsmiths brings it to £522.00.
WatchShopper has tracked the Seiko Mens Prospex Cobalt Blue Divers Watch SRPL51K1 across 4 UK retailers for 193 days. In that time the lowest recorded price was £560.00 at TH Baker on 13 April 2026, and the highest was £580.00 at Burrells. The average tracked price is £570.00. At £580.00, the current best price is above its tracked average.
| Lowest tracked price | £560.00 |
|---|---|
| Highest tracked price | £580.00 |
| Average tracked price | £570.00 |
| Current best price | £580.00 |
| Tracking since | 13 April 2026 |
72% of the 330 Seiko watches we track cost less than this one. This is the 13th cheapest of the 66 versions of the Prospex we list.
