Seiko Prospex Gps Solar Chronograph Speedtimer 42mm Men's Watch
This 42mm sports watch combines GPS positioning with solar charging for extended autonomy. The stainless steel case offers 100 metres of water resistance, suitable for recreational swimming and snorkelling. A dual-curved sapphire crystal protects the black dial, which features applied hour markers, luminous hands, and a date window between four and five o'clock. The watch is secured on a matching stainless steel bracelet with a three-fold clasp.
The movement is Seiko's in-house 5X83 calibre, which synchronises time via GPS satellite whilst eliminating the need for manual winding. When fully charged, the solar cells provide approximately six months of operation; in power-save mode, the watch can rest for roughly two years without depleting the battery entirely. This makes it particularly suited to those who wear watches intermittently or work in varying light conditions.
The Seiko Prospex Gps Solar Chronograph Speedtimer 42mm Men's Watch is listed on WatchShopper as a men's 42 mm stainless steel solar chronograph with a black dial, a date display, a GMT hand, sapphire crystal, and 100 m water resistance. It runs on the 5X83 calibre and comes on a stainless steel bracelet. On 23 October 2026 the lowest UK price was £1,960.00 at Beaverbrooks, in stock, with free delivery and 30-day returns. With the voucher code GET50, Beaverbrooks brings it to £1,910.00.
At £1,960 this watch is among the dearest for a men's solar watch with a 40–44 mm case: 92% of the 214 we track from every brand cost less. 96% of the 330 Seiko watches we track cost less than this one. This is the 58th cheapest of the 66 versions of the Prospex we list.
