Omron M1 Plus Instruction Manual page 6

1.Overview
Arm Cuff
If air starts to leak from the arm cuff, please replace with a new
one. (Refer to Chapter 7 "Optional Parts")
Inflation Bulb
6
G
G. Arm cuff
(Medium cuff: arm circumference 22-32 cm)
H. Air Tube
I
I. Air Release Button
J. Air Tube
K. Air Inflation Bulb
H
J
K