$17 off with coupon code. IJ56PI46
Bit of buyer beware as the reviews aren't that great but it's $16 so decide for yourself if it's worth the gamble.
Sinocare Blood Pressure Monitor
【Authoritative & Precise Blood Pressure Monitor】The printing precision is ± 3mmHg and the reading pulse accuracy is ± 5%. The readings taken by this sinocare blood pressure meter on the arm are equivalent to those obtained by an expert observer using the auscultation method of the cuff and stethoscope.
【Simple Operation & 2 Users Mode】supporting 2 user modes, is capable of storing up to 180 data sets (90 readings for each user). If you share with your spouse or loved ones, switch between 2 users to store the indicators separately. When not in use, this blood pressure machine automatically turns off after 1 minute to save power.
【Arrhythmic Pulse Detection Function】That is, by measuring the pressure, you can also check your heart rate.
【Large Adjustable Cuff】For normal and large arms for adults from 22cm (8.7 inches) to 42cm (16.5 inches). The integrated bracelet with velcro closures is ergonomically designed to offer precision and comfort during the measurement process.
【Dual Power Supply Mode】In addition to 4 AAA batteries, you can also use type C cable to supply power for this Blood Pressure Monitor at anytime anywhere, which is convenient and fast. 【Note】 If you are not satisfied with our product, we can arrange replacement or full refund for you. We also offer 100% satisfactory after-sales service.
Sinocare is fine
Chinese company tho.