Reliance Medical AOJ-30F Upper-Arm Blood Pressure Monitor

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Product guide

Reliance Medical AOJ-30F Upper-Arm Blood Pressure Monitor

Reliance Medical AOJ-30F is an upper-arm blood pressure monitor with a four-colour backlit LCD, voice readings and memory for two users. Its audible readings and colour cues may help at-home users, while cuff fit and the listing’s conflicting size details merit attention before purchase.

At a glance

Stores up to 198 readings across two user profiles, with date and time stamps stated in the description.
Four-colour backlit display uses different colours to indicate the stated pressure categories.
Voice broadcast can be muted, according to the product description.
Cuff-wearing and keep-still indicators are intended to help users position the cuff and remain still during measurement.

Price

£12.69Save 15%

Reference price: ~~£14.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Two-user memory can keep separate reading histories for household use.
Audible readings and a colour-coded screen offer different ways to interpret displayed results.
The listing specifies four AAA batteries as included, and also describes Type-C charging as an option.

Technical specifications

16 specifications

Identity
Brand	Reliance Medical
Model	AOJ-30F

Display
Screen technology listed	LCD

Power and battery
Power configuration	Battery Powered
Batteries listed	4 AAA batteries required. (included)

Dimensions and installation
Weight listed	460 Grams
Band size	16.9 inches
Intended measurement site	Arm
Age range	Adult

Measurement and memory features
User mode	Dual-user mode
Memory capacity	198 readings (99 readings for each user)
Additional detection	Irregular heartbeat detection
Cuff and movement indicators	"Cuff Worn" & "Keep Still" indicators
Display colours	white indicating standby, green for normal, yellow for mild hypertension, and red signaling high blood pressure

Power options and voice
Additional power option	Type-C charging (cable not included)
Voice broadcast	voice broadcast function

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: dimensions appear as both “20L x 14W x 15Th millimetres” and “2 x 1.4 x 1.5 cm; 460 g”, and the adjustable cuff is described as “16.9 inches” without a clearly stated measurement basis. Check the selected listing for the correct dimensions and cuff fit. Type-C charging is claimed, but its cable is stated to be not included.

What’s in the box

Included

Cuff
4 AAA batteries

Who is it for?

A good fit for

Adults wanting a home upper-arm monitor with separate memory for two users.
Users who may find voice readings or colour-coded display cues helpful.

Less suited to

People who need clearly confirmed device dimensions or an explicitly stated cuff measurement range before buying.

Reliance Medical AOJ-30F Upper-Arm Blood Pressure Monitor · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 1,973 ratings

5 stars78%78%
4 stars14%14%
3 stars4%4%
2 stars1%1%
1 star3%3%

Customer feedback reports easy setup, perceived accurate readings, useful colour cues, a cuff considered large enough, good battery life and clear instructions. These impressions align with the listed display, cuff and battery features, but they do not establish clinical accuracy or resolve the unclear cuff measurement. The aggregate ratings lean strongly positive, though ratings alone do not explain individual experiences.

Positive themes

Feedback describes setup and instructions as easy to follow.
Customers report finding the colour-coded display useful and the cuff sufficiently large.
Some feedback praises battery life.

Frequently asked questions

How many readings can it store?

The product description states a total of 198 readings, with 99 for each of two users, and says readings include date and time stamps.

What power options are listed?

The listing describes battery operation and Type-C charging. It states that four AAA batteries are included and that the Type-C cable is not included.

What cuff size should I expect?

The listed band size is 16.9 inches, but the measurement basis and cuff range are not clearly established. The listing also gives conflicting product dimensions, so confirm fit and size details before buying.