I've had my Omron Wrist Blood Pressure Monitor HEM-601 for many years, and it has proven to be dependable and accurate. It runs on 4 AA batteries, which almost never need replacing. The display screen is easy to read. It gives systolic and diastolic readings, as well as the pulse rate. There is also a button to set the tightness of the cuff pressure.
My doctor at the time suggested Omron, because he felt they were the best digital home monitors. There is a compartment (which is part of the monitor) for storing the cuff and tubing safely. There are many Omron blood pressure monitors with various features. This is just a basic model, but because of that, I think it has lasted a lot longer. (Less to go wrong.)
My monitor really gets a workout, because my doctor has requested that I monitor my blood pressure at home regularly, since I have diabetes also. High blood pressure is another risk factor for complications from this disease. Whenever I get my blood pressure taken in the doctor's office, I always experience what they call "white coat" complex. That means you get nervous and anxious, and your blood pressure goes higher than normal. So I am able to give my doctor a better idea of my daily readings, when I can bring in my charted results from home.
I guess you could say I have a love-hate relationship with my monitor. I hate it when my blood pressure is too high, but love the dependability and accuracy of my old friend!