In their 2018 guidelines to Canadian physicians Hypertension Canada recommended wrist models for patients with very large arms (BMI ≥ 35) and for patients that find the inflation of the upper arm cuff too painful.
 
Features:
2 users, 90 blood pressure readings each with time and date
Wide Range Cuff: 13.5 - 21.5 cm / 5.25 - 8.5"
BP Assessment Indicator
Detects Irregular Heartbeat
BIOS Averaging - Averages the last 3 readings
Low battery indication
 
Includes:
Storage Case
Instruction manual
2x AAA Batteries