Best Blood Pressure Monitors in Japan 2026: Omron vs A&D

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A home blood pressure monitor is a 血圧計 (ketsuatsukei) in Japanese. In Japan they are certified medical devices (管理医療機器), so each model has a certification number on the maker’s page. We compare upper-arm models with a cuff (上腕式).

We picked five upper-arm monitors with an in-stock Amazon Japan listing: three from Omron and two from A&D, both Japanese makers. We did not compare other brands. Prices run from ¥3,644 to ¥16,800 on kakaku.com on 24 October 2026; specs come from the makers’ own pages and manuals. A monitor does not diagnose anything: if your readings worry you, see a doctor. Our guide to English-speaking doctors in Japan can help with that step.

How to choose a blood pressure monitor in Japan

1. Upper arm first

A&D describes the advantage of an upper-arm unit simply: the cuff sits at heart height while you sit in a steady position. All five picks are upper-arm models; the A&D UA-1100NFC is a compact one with no hose.

2. Check your arm size

This is the spec people skip. Each cuff fits a range of arm circumference, measured around the middle of the upper arm: 17 to 36 cm on the three Omron picks, and 22 to 32 cm on both A&D picks. If your arm is under 22 cm or over 32 cm, the Omron models are the ones that list your size. Measure with a tape before you order.

3. Memory, app or paper

You can write readings down, keep them in the monitor’s memory, or send them to a phone. Memory here ranges from the last reading only (A&D UA-1100NFC) to 60 readings each for two people (Omron HCR-7524T). Two picks connect to free apps: Omron’s HCR-7204T and HCR-7524T by Bluetooth to OMRON connect, and the UA-1100NFC by NFC, tapping the phone on the unit, to A&D Connect.

4. Power

Every pick runs on batteries, and trial batteries come in the box. Only the Omron HCR-7524T includes an AC adapter; for the HCR-7106 and the A&D UA-651Plus it is sold separately. The UA-1100NFC runs on three AAA batteries, about 400 measurements by A&D’s figure.

5. Bought in Japan, used in Japan

Omron’s HCR-7204T and HCR-7524T manuals say the product is for use in Japan only and its warranty is valid only in Japan. A&D’s UA-651Plus and UA-1100NFC manuals say: “This warranty is valid only in Japan.” That is why this guide links to Amazon Japan only. A&D’s UA-651Plus ships with instructions in Japanese, English, Chinese and Korean; the two Omron manuals we read are in Japanese, apart from the warranty line.

6. Words you will see

The 5 best blood pressure monitors to buy in Japan in 2026

Prices include tax; buttons go to Amazon Japan. All five appear in their makers’ 2025 lists of home monitors with validation information, posted on the Japanese Society of Hypertension website on 25 December 2025; the three Omron rows cite the study of an equivalent model. The society publishes the makers’ data as supplied and says it does not recommend any specific device.

1. Omron HCR-7106 — the everyday Omron, widest cuff range

The HCR-7106 is a one-button Omron with the maker’s Fit Cuff, which Omron says you can wrap tightly with one hand and which still measures correctly if it slips a little to the left or right of the right position. A cuff-wrap check tells you on screen whether the cuff is wrapped at the right tightness each time. The cuff fits arms from 17 to 36 cm, and the unit stores 60 readings for one person.

Amazon Japan asked ¥6,840 with free delivery, the lowest in-stock price on kakaku.com; Omron’s own store lists it at ¥9,328. It runs on four AA batteries (trial set included); the AC adapter HHP-AM01 is sold separately, ¥3,300 at Omron’s store.

2. Omron HCR-7204T — readings straight to your phone

The HCR-7204T has a slightly smaller body, the same Fit Cuff and 17 to 36 cm range, plus Bluetooth Low Energy. Readings transfer automatically to OMRON connect, Omron’s free iPhone and Android app, where you can see graphs and a calendar, log medication and set reminders. Omron notes that one phone manages one user’s data and that the monitor is for one person.

The unit itself keeps only 14 readings, so the app is the real record. It runs on four AA batteries, about 300 measurements by Omron’s test conditions; the AC adapter is optional. Amazon Japan and Omron’s store both asked ¥9,980. Because it transmits radio waves, Omron asks people with a pacemaker or other implanted device to use it under a doctor’s guidance, and not to use it where wireless devices are banned, such as on planes or in hospitals.

3. Omron HCR-7524T — two users, adapter in the box

The HCR-7524T stores 60 readings each for two people, comes with an AC adapter and uses the Fit Cuff Plus, which Omron says has a softer inner layer so the pressure is more even than on the regular Fit Cuff. It lights a check mark when a reading is 135 mmHg or 85 mmHg and above, which Omron calls the reference values for high blood pressure at home. It also stores morning and evening readings separately and marks a week whose morning average is at or above that level.

Its pulse display distinguishes between a pulse that is irregular in part and one that is irregular throughout; Omron says to consult a doctor if either appears often. It connects to OMRON connect by Bluetooth, with one phone per user. Amazon Japan and Omron’s store both asked ¥16,800. The HCR-7624T adds a backlit display for dark rooms and was ¥18,800 at Amazon Japan.

4. A&D UA-651Plus — the budget pick, with an English manual

A&D’s UA-651Plus is a one-button monitor with a soft cuff that A&D says you can wrap firmly with one hand. It stores 60 readings with an average, shows an irregular-heartbeat (IHB) mark and places each reading on the WHO blood pressure classification with a six-step bar. A&D says it was clinically shown to meet the ISO 81060-2:2018 accuracy standard.

Two details matter for foreign residents: the box contains a manual in Japanese, English, Chinese and Korean, and A&D gives a 10-year warranty, excluding consumables such as the cuff and excluding business use. The cuff fits 22 to 32 cm only. Amazon Japan asked ¥3,644, with the delivery fee not shown on kakaku.com; Joshin and Kojima asked ¥3,681 with free delivery. Four AA batteries last about 700 measurements; the AC adapter AX-TB233-JC is sold separately.

5. A&D UA-1100NFC — no hose, fits in a bag

The UA-1100NFC puts the unit on the cuff itself, so there is no hose: you slip it onto the upper arm, hold it at heart height and press the button. It measures 36 × 31 × 144 mm and weighs about 240 g, and a rubber band on the cuff bundles it up; A&D pitches it for trips and for a desk. A&D says that tapping an NFC phone on the unit sends the reading to its free A&D Connect app, with no pairing, so a whole family can share one monitor.

The unit itself keeps only the previous reading, so plan to use the app or a notebook. It takes three AAA batteries, about 400 measurements, and fits arms of about 22 to 32 cm. The warranty is one year. It comes in white, grey and purple: the purple was ¥7,182 in stock at Amazon Japan, and Joshin, Yodobashi, Yamada, Kojima and K’s Denki asked ¥7,980 for any colour.

Comparison table

* Incl. tax, in-stock new rows on kakaku.com. Weights without batteries; the HCR-7524T figure also excludes the cuff.

How to measure, and when to stop and ask a doctor

Sit the way the manual shows

Omron’s HCR-7204T manual describes the posture: lean back against the chair, rest your arm on a table palm up, keep the centre of the cuff at heart height (a cushion or towel under the elbow helps), keep your feet flat on the floor and do not cross your legs. Omron’s HCR-7204T store page adds how to place the cuff: air tube on the palm side and centred on the arm, about 1 to 2 cm above the inside of the elbow.

Same time, every day

A&D’s guidance is to measure in the morning within an hour of waking, after using the toilet and before breakfast and medication, and in the evening before bed, after using the toilet, each time after sitting quietly for one to two minutes. Readings taken straight after a meal, alcohol, smoking or a bath vary, A&D notes. Record every reading; A&D suggests taking two at each sitting and noting the average.

Who should check with a doctor first

Omron’s HCR-7204T manual says not to use it near the site of an implanted device such as a pacemaker, not on an arm with a drip or an injury, and not on infants or others who cannot express their wishes. It lists conditions that need a doctor’s guidance, including arrhythmias such as atrial fibrillation, diabetes, kidney disease, pregnancy, dialysis, past breast or lymph node removal, and use by minors. A&D’s two manuals say people with a pacemaker must consult a doctor and confirm there is no effect before use, and list arrhythmia, breast removal and shunts for a doctor’s guidance. The UA-651Plus manual asks pregnant women to consult a doctor first; the UA-1100NFC is intended for ages 13 and up, not for newborns or pregnant women.

What a high reading means

Omron calls 135 mmHg systolic, or 85 mmHg diastolic, and above the reference values for high blood pressure at home. A single reading is not a diagnosis. If your readings are often high, or an irregular-pulse mark keeps appearing, take your record to a doctor; in an emergency, call 119. Check how your national health insurance covers the visit.

Frequently asked questions

Are Japanese blood pressure monitors accurate?

All five picks are certified medical devices in Japan, and all five appear in Omron’s or A&D’s 2025 validation lists on the Japanese Society of Hypertension website; the society posts the makers’ data as supplied and does not recommend specific devices. Omron’s HCR-7204T manual and A&D’s UA-651Plus and UA-1100NFC pages give pressure accuracy as within ±3 mmHg. Accuracy at home also depends on the cuff size and how you sit.

Upper-arm or wrist monitor?

This guide covers upper-arm models only. A&D notes that an upper-arm unit makes it easy to keep the cuff at heart height in a steady position. If you want something small, the hoseless A&D UA-1100NFC weighs about 240 g.

Which monitor has English instructions?

A&D’s UA-651Plus ships with a manual in Japanese, English, Chinese and Korean. The Omron HCR-7204T and HCR-7524T manuals we read are in Japanese. The apps, OMRON connect and A&D Connect, run on your phone, but check the language options in your app store before you rely on them.

Can I take a Japanese monitor home?

We would not count on it. Omron’s HCR-7204T and HCR-7524T manuals say they are for use in Japan only, and A&D’s manuals say: “This warranty is valid only in Japan.” Omron lists its AC adapters for AC 100 V. This guide therefore links to Amazon Japan only.

What reading should worry me?

Omron uses 135/85 mmHg and above as the reference values for high blood pressure at home. That is a reason to show your record to a doctor, not a diagnosis. In an emergency, call 119.

The short version

For one person and any arm from 17 to 36 cm: Omron HCR-7106, ¥6,840. To send readings to your phone: Omron HCR-7204T, ¥9,980. For two people, with an AC adapter: Omron HCR-7524T, ¥16,800. On a small budget, with an English manual and a 10-year warranty: A&D UA-651Plus, ¥3,644. To carry it around: the hoseless A&D UA-1100NFC. Measure your arm first, sit the way the manual shows, and take your record to a doctor if the numbers worry you. Stocking up at the drugstore too? See our Japanese drugstore guide.

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