Defender Luna 2.0 Personal Attack Alarm - Loud 125dB Siren with Strobe LED Light - Personal Safety Device For Women, Batteries Included - Police Accredited review
Carrying in a bag, on a keyring or in a coat pocket as a low-cost personal safety deterrent when out and about — not for home fall or health monitoring.
By Tom Calder · Price last checked 20 Sep 2026, 12:29 BST · price-tracked
This is a keyring-sized personal attack alarm, not a careline pendant: pull the pin or press the button and it lets out a genuinely startling 125dB siren with a flashing strobe, meant to draw attention and buy time to get away. There's no monthly fee, SIM or app — it's a buy-once, carry-anywhere device, but it plays no part in fall detection or 24/7 health monitoring.
as of 20 Sep 2026, 12:29 BST · Details
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- Loud 125dB siren is genuinely attention-grabbing, with an LED strobe for extra visibility in the dark
- No subscription, SIM or app — nothing to set up, no ongoing cost
- Cheap and pocket/keyring-sized, with batteries included
- No fall detection, monitoring service or automatic call for help — an entirely different job to a careline pendant
- Battery is a replaceable CR2032 coin-cell type, not rechargeable — the manufacturer's claimed 2-year battery life is unverified
Who shouldn't buy this
You're buying for an older relative who needs automatic fall detection or a 24/7 monitored SOS line — this is a personal attack alarm for out-and-about safety, not a telecare pendant. For that, look at a monitored careline service (e.g. Careline365, LifeConnect24, or your local authority's telecare team), typically £15–25/month.
Key specs
| Connectivity | None |
| Fall detection | Not applicable |
| Monitoring | None |
| Battery / charging | 2 x CR2032 coin-cell batteries included |
Our rating is a considered spec-and-evidence verdict: we verify every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who a product isn't for. Commissions never change a rating. Read the full methodology →
Alternatives to consider
as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Want this cheaper?
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