I got this one for my elderly father 2 years ago, and it has been rock solid for him. He has to check his blood pressure each day due to his health conditions, and we've found this unit to be reliable and highly accurate.

https://www.amazon.com/gp/product/B07WFGBGWP/ref=ppx\_yo\_dt\_b\_search\_asin\_title?ie=UTF8&psc=1