WattLock vs Optiwatt
Updated October 2026 · WattLock UK team
Both are plug-in energy saving devices. Here's how to compare them fairly, using facts you can check.
Quick answer
Both are plug-in energy savers. Compare price, UK plug standard, guarantee length and UK support. WattLock costs from £39 (£26 each in a 3-pack) with a 30-day money-back guarantee.
What to compare
- Price per unit and bundle deals
- UK plug standard and safety information
- Money-back guarantee length
- Where it's sold and who handles UK support
WattLock at a glance
- From £39, or £26 each in a 3-pack
- Built to the UK plug standard, fire-resistant casing
- Free UK delivery
- 30-day money-back guarantee
- Sold only at wattlock.co.uk
| What to check | WattLock |
|---|---|
| Plug type | UK 3-pin |
| Casing | Fire-resistant |
| Inside | TrueWatt circuit with approved capacitor |
| Price | From £39, or £26 each in a 3-pack |
| Delivery | Free tracked UK delivery |
| Guarantee | 30-day money-back |
| Where sold | wattlock.co.uk only |
Our advice
Check each seller's current price, guarantee and safety details before you buy. If you choose WattLock, you can test it at home for 30 days risk-free.
How to compare plug-in energy savers fairly
Optiwatt and WattLock are both plug-in energy savers. Rather than repeating claims we can't verify about another brand, we suggest comparing any two products on the same practical points: plug type, build and casing, price per unit, delivery, guarantee and who you contact if something goes wrong.
Price per unit matters because most homes need more than one device. A cheaper single unit can cost more overall if multi-buy pricing isn't good.
Why UK buyers choose WattLock
- Made for British sockets with a UK 3-pin plug
- Clear, honest information without guaranteed-savings promises
- Bundle pricing down to £26 per unit
- Free tracked UK delivery and UK email support
- 30-day money-back guarantee
Frequently asked questions
Free UK delivery · 30-day money-back guarantee
Order WattLock
Up to 62% off- 1Enter delivery address
- 2Pay securely
- 3Dispatched with tracking
Free UK delivery
30-day money-back guarantee. Not happy? Send it back for a full refund. Read the terms. Secure Shopify checkout, prices include VAT.