V1 vs V2 vs V3 Peptide Pen: What's the Difference and Which Should You Buy?
V1, V2 and V3 are labels that sellers use for generations of reusable pen bodies, and the V3 is the pen V3 Pens UK sells. It has an anodised aluminium body, an aluminium cap, a plastic clip and dial knob, and a dial-and-click mechanism, and it takes standard 3mL cartridges, which are sold separately. It comes in a choice of colours and costs £20, dispatched from UK stock. It is sold empty, with no contents, needles or medication. What changed between V1, V2 and V3 varies between manufacturers, so the V1 and V2 details below are general and the V3 details describe the pen we sell. If you are comparing listings, check the material, the lid design, the colour range and what is included.
All pen bodies discussed on this page are sold as empty hardware accessories only. No contents, no needles, no medication included.
The V1 Pen
The V1 label is generally used for earlier reusable pen body designs. Materials, finishes and colour options varied from one manufacturer to another, so check the details of any specific listing rather than assuming.
The V2 Pen
Sellers use the V2 label for later designs, but what changed varies between manufacturers, and descriptions of the V2 differ from source to source. Compare the material, lid design and price of any listing you are considering.
The V3 Pen: What You Get
Available from V3 Pens UK from £20 and dispatched from UK stock, the V3 has the following features:
Anodised Aluminium Body
The V3 sold by V3 Pens UK has an anodised aluminium body and an aluminium cap. The clip and dial knob are plastic.
Cap With Integrated Clip
The cap has an integrated clip for carrying the pen in a pocket or bag, and the pen can be stored in the V3 cases sold separately.
Dial-and-Click Mechanism
The V3 is a mechanical pen with a dial-and-click mechanism. It takes standard 3mL cartridges, which are sold separately.
Colour Options
The V3 is available in a choice of colours from V3 Pens UK.
V1 vs V2 vs V3: Side by Side
| Factor | V1 | V2 | V3 |
|---|---|---|---|
| Body material | Varies by manufacturer | Varies by manufacturer | Anodised aluminium body and aluminium cap, plastic clip and dial knob |
| Lid design | Varies by manufacturer | Varies by manufacturer | Cap with integrated clip |
| Internal mechanism | Varies by manufacturer | Varies by manufacturer | Dial-and-click |
| Colour options | Varies by manufacturer | Varies by manufacturer | A choice of colours |
| UK price from | Varies | Varies | £20 at V3 Pens UK |
Why the Generation Matters
V1, V2 and V3 are labels that sellers use to describe pen designs, and the details behind each label can differ between manufacturers. Before you buy any reusable pen body, check the material, the lid design, the colour range, what is included and whether it is sold empty.
What About V4?
A V4 label has appeared on some marketplace listings. We have not been able to confirm it as an established design, and V3 Pens UK does not stock one. The V3 is the current model we sell.
Which Pen Should You Buy in the UK?
If you want a V3 pen from a UK-based seller, V3 Pens UK sells the V3 reusable peptide pen from £20, dispatched from UK stock, in a choice of colours. The pen is an empty accessory only, with no contents, no needles and no medication. Compare the material, lid design, colour range and price of any pen before you buy.
Common Questions
What is the difference between V1, V2 and V3 peptide pens?
V1, V2 and V3 are labels sellers use for generations of reusable pen bodies, and what changed between them varies by manufacturer, so check the specific listing. The V3 from V3 Pens UK has an anodised aluminium body, an aluminium cap, a plastic clip and dial knob, a dial-and-click mechanism, and a choice of colours.
Is the V3 pen better than the V2?
Better depends on what you want from a pen, and V2 designs vary by manufacturer, so compare listings on material, lid design, colours and price. The V3 from V3 Pens UK costs £20, comes in a choice of colours and has an integrated clip on the cap.
Is there a V4 peptide pen?
A V4 label has appeared on some marketplace listings, but we have not been able to confirm it as an established design. V3 Pens UK does not stock a V4, and the V3 is the current model we sell.
Where can I buy a V3 pen in the UK?
The V3 pen is available from V3 Pens UK at £20, dispatched from UK stock via Evri Tracked delivery, with flat rate £5 shipping to mainland UK. Orders are usually dispatched the same working day, and we aim to dispatch within 1 to 2 working days.
What colours does the V3 pen come in?
The V3 pen is available in a choice of colours from V3 Pens UK. Choose yours on the product page.
Is the V3 pen sold empty?
Yes. The V3 pen from V3 Pens UK is sold as an empty hardware accessory only. No contents, no needles, and no medication are included. Cartridges are sold separately.
Related reading
- V3 Reusable Peptide Pen
- Peptide Pen UK: The Complete Buyer's Guide
- V3 Pens
- Pen + Deluxe Case Bundle
- Frequently Asked Questions
- Is the V3 Pen Legal in the UK?
Last updated: November 2026. Empty accessories only. No contents, no needles, no medication, or consumable substances of any kind are included. Buyers are solely responsible for ensuring any use of the product complies with applicable UK law.
