Colt 3543
£ 104 Original price was: £ 104.£ 79Current price is: £ 79.
A men’s rectangular frame in gunmetal or navy. Semi-rimless with an open lower edge.
- Size: 58-17-145 mm, lens depth 40 mm
- Frame: Semi-rimless, Titanium
- Colours: Gunmetal, Navy
- Case & microfibre cloth included
- Lenses made in our UK labs
- Free delivery
- Free 30-day returns
About the Colt 3543
Colt 3543 Prescription Glasses
A clean rectangular frame works at the office, at home and everywhere in between. The Colt 3543 is a men’s semi-rimless titanium rectangular frame, sized 58-17-145, in Gunmetal or Navy. You can order it with single vision, varifocal or bifocal lenses made to your prescription. It is part of our Colt collection.
Gunmetal or Navy?
Gunmetal. Gunmetal is a dark, smoky grey metal. It goes with almost everything and never draws too much attention.
Navy. Navy is a deep, dark blue. It reads as smart and dark from a distance, with a little more personality up close.
If you are stuck between two, choose the one closest to the colours you wear most. You can always add a second pair later.
Shape and style
Rectangular lenses suit round and oval faces, adding a bit of definition. Being semi-rimless, it keeps a defined top line while the lower half of the lens stays open and light.
Titanium is one of the lightest frame materials around, which makes it a great choice for all-day wear.
If you want a frame you can put on in the morning and forget about, the Colt 3543 is a strong choice.
How to wear it
Choose the darker colour for the office and the lighter one for a more relaxed look. Either way, it is an easy frame to wear every day.
Size and fit
| Brand | Colt |
|---|---|
| Frame | Semi-rimless, Titanium |
| Colours | Gunmetal, Navy |
| Frame size | 58-17-145 mm (lens width, bridge, arm length) |
| Lens depth | 40 mm |
| Designed for | Men |
With 58mm lenses, this is a larger frame that suits wider faces. The 17mm bridge is average. The 145mm arms are on the longer side, which suits larger heads. Across the lenses and bridge it measures about 133mm.
The easiest way to check is against glasses you already love. Most frames show their size inside the arm; if yours are close to these, you are in safe territory.
Lens options for the Colt 3543
Your optician’s prescription will usually tell you which of these you need:
- Single vision: the same prescription from edge to edge.
- Bifocal: distance at the top and a reading segment at the bottom.
- Varifocal: a smooth change from distance to reading, with no line.
- Ready readers: a fixed magnification for books, phones and screens.
The 40mm lens depth gives varifocal lenses plenty of room. Want lighter lenses? A high-index lens is thinner than standard plastic. Pair it with an anti-reflective coating for less glare when you drive after dark.
Ordering online is simple
You need a valid prescription from your optician and your pupillary distance (PD), the distance between your pupils. Many opticians include your PD on the prescription; if yours does not, just ask for it. Choose your colour, pick your lens type, enter your details and add any lens upgrades. If you are unsure about size, compare the measurements above with a pair you already wear.
Made for you in our UK lab
Pick your colour and lenses, add your prescription and PD, and our UK lab cuts your lenses and fits them into your Colt 3543. Every pair is checked before it leaves us.
Looking after them
Rinse off any grit before you wipe, dry the lenses with a clean microfibre cloth, and take your glasses off with both hands so the arms stay aligned. See our lens care guide for more.
Your questions, answered
Can I get varifocal lenses in the Colt 3543?
Yes. The 40mm lens depth gives varifocal lenses enough height for all three vision zones.
Can I use the Colt 3543 as computer glasses?
Yes. Single vision lenses set to your screen distance, or varifocals if you also need distance vision, both work well for desk work.
Is it a large frame?
Yes. With 58mm lenses it suits wider faces.
What does semi-rimless mean?
The frame runs along the top of the lenses only. The lower edge is held by a fine line, so the bottom of the lens is open.
Do you make the lenses yourselves?
Yes. Every pair is made to order in our UK optical lab, where your lenses are cut to your prescription and fitted into your frame.
Not quite the one? Take a look at our men’s glasses and prescription glasses.
Lens prices
Lens types
| Lenses | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.5 Index (standard) | FREE | ÂŁ40 | ÂŁ69 |
| Transitions | ÂŁ50 | ÂŁ90 | ÂŁ119 |
| Sunglasses tint | ÂŁ10 | ÂŁ50 | ÂŁ75 |
| Blue light filter | ÂŁ30 | ÂŁ70 | ÂŁ99 |
Basic 1.5 Single Vision lenses with anti-reflection coating are included in the frame price.
Thinner lens upgrades
| Lens index | Single Vision | Bifocal | Varifocal |
|---|---|---|---|
| 1.6 + HMC | ÂŁ30 | ÂŁ70 | ÂŁ95 |
| 1.67 + HMC | ÂŁ50 | ÂŁ90 | ÂŁ119 |
| 1.74 + HMC | ÂŁ70 | – | ÂŁ135 |
Higher index lenses are thinner and lighter, and are worth it for stronger prescriptions. All include an HMC coating.
Frame details & size guide
Specifications
| Color | Gunmetal, Navy |
|---|---|
| Eye Size | 58 |
| Brand | Colt |
| Lens Depth | 40 |
| Temple Length | 145 |
| Bridge Size | 17 |
| Type | Optical |
| Material | Titanium |
| Wearer | Men |
| Rim | Supra |
How to read frame sizes
The three numbers (for example 48-20-140) are the lens width, the bridge and the arm length in millimetres. Compare them with a pair you already own.

Delivery, returns & what is included
Delivery
- Single Vision: 5-7 working days
- Bifocal: 7-10 working days
- Varifocal: 7-10 working days
- Dispatched within 48 hours by tracked Royal Mail service
Delivery is free. Your estimate for your country is shown at checkout.
Returns & exchanges
Free 30-day returns or exchanges. If your glasses are not right for you, we will make it right.
What is included
- Anti-reflection lenses included
- Case and microfibre cloth
- Lenses made in our UK optical lab
- All frames CE marked
- Worldwide delivery
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