







UTILITY 40 | DIVE COLLECTION | MARINE
Case & Strap
- Ships on custom FKM rubber strap
- Option to add quick-release TiX titanium bracelet with 5mm on-the-fly extension link
- 40mm TiX titanium case, hardened to 1200hv
- 300m/1000ft water resistance, individually tested
- Screw-down titanium case back
- Screw-down crown with easy to grip knurling
- 120 click unidirectional bezel with brushed ceramic insert
- Clous de Paris dial with Swiss Super-LumiNova ceramic indices
- Custom handset with Swiss Super-LumiNova lume
- Scratch-resistant sapphire crystal, with triple anti-reflective coating
Dimensions
- Case Size 39mm
- Bezel Size 40mm
- Height 12mm
- Lug-to-Lug 46mm
- Strap Size 20mm
- Case Weight 54g
- Weight on Rubber Strap 72g
- Weight on Bracelet 110g
Movement
- Swiss-made Ronda Solartech 215: a solar-powered quartz movement built for accuracy, toughness, and years of loyal service.
- Runs on light: sunlight, lamplight, even your office strip lights will do. Fully charged, it’ll keep ticking for eight months in the dark.
- Super accurate: better than ±1 second per day.
- Engineered for extremes: shock and magnet resistant, and rated to operate from 0 – 50 °C.
- No winding, no batteries, no drama. It just works.
Shipping & Returns
- Free & fast priority shipping.
- Easy 30-day returns: if you’re not happy, you can return or exchange your watch within 30 days, as long as it’s unworn and in original condition.
- International orders: we can’t refund local taxes or import duties (Sadly, your government keeps the taxes. We asked nicely).
- Need help? email support@onticwatches.com and we’ll get things sorted.
- For full details please see our shipping and returns policies.
KEY FEATURES
- 40mm TiX Titanium sand-blasted case, hardened to 1200hv
- 300m water resistance
- FKM rubber strap, with option to add TiX Titanium bracelet
- Built in the UK, backed by a 3 year warranty
300 metres. TiX titanium. Swiss solar. No nonsense.
The DIVE collection takes our function-first approach and fine tunes it for the deep.
The case is TiX titanium (hardened to 1200 HV). 40% lighter than steel, 4x harder, corrosion-proof and built to shrug off real use.
Water resistance is 300 metres, with a screw-down crown and a unidirectional bezel you can easily grip and read when it matters. The dial is high contrast and properly legible in low light. Everything on it earns its place.
Inside, a Swiss solar movement runs on light and keeps time to within seconds a month. No winding. No battery swaps. No ritual. Just reliable timekeeping that looks after itself.
Titanium. Solar. Proper depth rating. Assembled and tested in Britain.
SHIPPING & DUTIES
-
Free worldwide priority delivery on all watches
- UK, USA, EU: All import duties, tariffs & taxes are included in the price. Please see our Shipping Policy for details
- REST OF WORLD: Please see our Shipping Policy for details
Choose options









Hardened to 1200hv
OPTIONAL TiX Titanium bracelet
The incredibly light bracelet is built for comfort.
Screwed links make it easy to size, and you can fine tune the fit with an included half-link, and two micro-adjustment points.
For hot days, it features a 5mm on-the-fly extension under the clasp.
EVERY PART EARNS ITS PLACE
(Models shown are 'core' variants, in cobalt and granite)

TECHNOLOGY
SWISS SOLAR QUARTZ
At the heart of the UTILITY 40 is the Swiss-made Ronda Solartech 215. It’s a solar-powered quartz movement built for accuracy and longevity.
Solar quartz is the logical choice for a proper tool watch. It keeps time to within seconds a month, shrugs off shocks, and never needs winding. When you’re relying on your kit, precision and simplicity matter more than ritual.
No winding, no batteries to change. Just a watch that quietly minds its own business.

TECHNOLOGY
TiX TITANIUM
The case of the UTILITY 40 is made from TiX. That’s the name we give to our specification of hardened titanium.
Starting with Grade 2 titanium, we add a diamond-like carbon surface that forms a dense outer layer roughly four times harder than steel, giving the case outstanding scratch resistance without adding weight. It’s not paint, it’s not plating, and it won’t wear off.
The result is a hypoallergenic and corrosion-proof material that’s 4x harder than steel yet 40% lighter.
That’s what makes the UTILITY 40 lighter than it looks, tougher than it needs to be, and calmly unimpressed by whatever you do to it.

TECHNOLOGY
DESIGNED, ASSEMBLED & TESTED IN THE UK
Every Ontic starts life on a British workbench. Designed, assembled and tested here by people who care about doing it right. It’s slower and costs little more but it guarantees each watch leaves the bench properly built and properly tested.
Each watch is tested for water resistance, accuracy, and finish before it leaves. No conveyor belts, no robots, just patient watchmakers who want to do it right.
Once it’s on your wrist, the same team who built it will support it for life.
British-built. World-ready.
Legibility First
High-contrast dials, fully lumed hands, and bold ceramic indices make the time easy to read at a glance. As light levels fall, Swiss Super-LumiNova provides a steady glow so the dial remains visible.




