ByFloProducts FC-BP121 Blood Pressure Monitor, USB-C

ByFloProducts FC-BP121 is an upper-arm blood pressure monitor listed for home use, with a color-coded backlit display, two-user memory, and USB-C power. Its stated cuff range and dual-power options may suit shared household monitoring, while the listing's clinical-accuracy claim is not independently verified here.

At a glance

Color-coded screen displays systolic and diastolic readings, pulse rate and the selected user profile.
Stores up to 120 readings for each of two users, useful for keeping separate histories.
Listed cuff range is 22-42cm (8.7-16.5 Inches).
Listing describes USB-C power and included AA batteries for plugged-in or portable use.

Price

$16.99Save 15%

Reference price: ~~$19.99~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Two separate user profiles with up to 120 stored readings apiece.
Backlit color-coded display is intended to make results easier to read at a glance.
USB-C power and battery operation offer different placement options.

Technical specifications

10 specifications

Identity
Brand	ByFlo LLC
Model	FC-BP121

Monitoring features
Users	2 independent users
Displayed measurements	Systolic, diastolic, pulse rate, and user profile
Measurement time	Within 45 seconds
Movement detection	Body movement detection technology

Cuff and power
Cuff fit	22-42cm (8.7-16.5 Inches)
Power options	USB-C charging and batteries
Batteries	4 AA batteries required. (included)

Dimensions and installation
Dimensions listed	5.08 x 2.09 x 3.78 inches; 8.47 ounces

What to know before buying

The listing claims clinically validated accuracy and results within 45 seconds, but provides no validation details here. Follow appropriate measurement guidance and consult a healthcare professional about interpreting readings.

Who is it for?

A good fit for

Households where two people want separate reading histories on one monitor.
Buyers who prefer a backlit display with color-coded readings.
Adults whose upper-arm measurement falls within the listed cuff range.

Less suited to

Buyers who need documented independent clinical-validation details before choosing a monitor.
People whose upper-arm size falls outside the listed 22-42cm (8.7-16.5 Inches) cuff range.

ByFloProducts FC-BP121 Blood Pressure Monitor, USB-C · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 361 ratings

5 stars76%76%
4 stars15%15%
3 stars3%3%
2 stars1%1%
1 star5%5%

Customer feedback highlights ease of use, perceived accuracy, readability and value. Those reported impressions are relevant for routine home monitoring, and the large backlit display and two-user memory align with those needs. Customer perceptions do not establish clinical accuracy, which remains a manufacturer claim.

Positive themes

Customers describe the monitor as easy to use and readable, with some praising its large display.
The supplied feedback also reports positive impressions of accuracy and value.

Frequently asked questions

How many users can the FC-BP121 store readings for?

The listing says it supports two independent users and stores up to 120 readings per user, 240 in total.

What cuff size does the listing specify?

It lists a cuff fit range of 22-42cm (8.7-16.5 Inches).

Can it run on batteries as well as USB-C?

The listing describes USB-C charging and battery power, and specifies four included AA batteries.

Does the listing establish clinical accuracy?

It claims clinically validated performance, but the supplied details do not include validation documentation. Treat that as a listing claim rather than independently confirmed evidence.