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Lorus RU431AX9 Automatic Blue Silicone Strap Watch - W16353
Ref. RU431AX9
Sits in Lorus’s upper tier here — more premium than three quarters of the Lorus watches we list, which start at £30.
Price range £30 to £160 across 94 Lorus watches in stock.Lorus sits within the Seiko group, and the Y675 movement inside this watch is a Japanese-made automatic that carries that engineering directly — a self-winding calibre with a 41-hour reserve, visible through a screw-down exhibition caseback. That window into the movement is one of the more honest gestures a watch at this level can make. The Sport Motion collection takes the blue-and-red bezel format — that particular pairing associated with GMT divers since the 1950s — and applies it to a straightforward 100-metre sports watch. At 42mm across and 12.9mm thick, it sits sensibly on the wrist without pushing into territory that demands a dress shirt to offset it. The silicone strap keeps weight practical and handles sweat without complaint, which suits the watch's stated purpose better than a steel bracelet would.
- Reference
- RU431AX9
- Brand
- Lorus
- Collection
- Sport Motion
- Case size
- 42mm
- Case thickness
- 12.9mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Blue
- Crystal
- Mineral
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- Y675
- Functions
- Date
- Water resistance
- 100m
- Bracelet / strap
- Silicone strap
- Strap colour
- Blue
- Clasp
- Buckle
- Lume
- Luminous
- Retailer
- F.Hinds
Additional specifications
- Power reserve
- 41 hours
Also in 5 collections
This watch appears in Stainless Steel Watches (3,092), Back in Stock (2,772), Automatic Watches (1,659), Blue Dial Watches (828) and Automatic Watches Under £500 (313).
Manufacturer’s guarantee
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 100m water resistance covers swimming and watersports
- Luminous hands and markers for low light
- One of Lorus's more premium watches
Lorus RU431AX9 alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | RU431AX9 | R8821108001 | 1710694 |
|---|---|---|---|
| Price | £150 | £189 | £169 |
| Case size | 42mm | 42mm | 42mm |
| Water resistance | 100m | 100m | 50m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Silicone strap | Leather strap | Stainless steel bracelet |
| Power reserve | 41 hours | 41 hours | 36 hours |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 100m it is rated for swimming and snorkelling, though not for diving.
Water resistance explainedWill the glass scratch?
It can, over time. Mineral glass handles daily wear but will pick up fine scratches that sapphire would not.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedHow long does it run for when it's not worn?
About 41 hours fully wound — enough to survive a night off the wrist, but not a full weekend.
Is it a men's or women's watch?
Listed as men's.
Cheapest place to buy
F.Hinds is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
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