Seiko Prospex Diver’s Sumo Solar Chronograph Men’s Watch
£590

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Seiko Prospex Diver’s Sumo Solar Chronograph Men’s Watch | £590
Ring Size Guide
Ring Size | Circumference (mm) | Ring Size | Circumference (mm) |
---|---|---|---|
I | 48.0 | R | 58.9 |
J | 48.7 | S | 60.2 |
K | 50.0 | T | 61.4 |
L | 51.2 | U | 62.7 |
M | 52.5 | V | 64.0 |
N | 53.8 | W | 65.3 |
O | 55.1 | X | 66.6 |
P | 56.3 | Y | 67.8 |
Q | 57.6 | Z | 68.5 |
Please note that this is only a guide and will not take into account the style of ring. For example, if you are choosing a ring with a deep band width, you may need a larger size.
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Seiko Prospex Diver’s Sumo Solar Chronograph Men’s Watch (M123120)
Free Watch Adjustments
We can adjust your bracelet watch for free to make sure it’s the perfect fit.

Combining bold, powerful looks with high-tech innovation, this Seiko Prospex Diver’s Sumo Chronograph is as substantial and strong as its nickname suggests. The powerful solar battery is charged by both natural and electric light.
At A Glance
- Presented on a stainless steel bracelet with three fold clasp, push button release and extender
- 44.5mm stainless steel case with a black uni-directional rotating bezel and 200m water resistance
- Sapphire crystal
- Black dial with LumiBrite dot hour markers
- Date window at 4:30
- Three chronograph sub-dials
- Battery charge indicator and overcharge prevention function
- Powered by a solar movement
- Up to 6 months battery life when fully charged
Specification
Range | Prospex |
Collection | Sumo |
Supplier Code | SSC757J1 |
Strap/Finish | Stainless Steel |
Strap Type | Bracelet |
Watch Movement | Solar Powered |
Function | Chronograph, Date |
Water Resistancy | 200m |
Case Size (mm) | 44.5 |
Dial Colour | Black |
Markers | Batons |
Clasp Type | Fold Over Clasp |
Glass Type | Sapphire Crystal Glass |
Manufacturer Warranty | 2 Years |