Deluxe Automatic Blood Pressure Monitor, Upper Arm Recliner & Tilt Can I replace the rubber

Can I replace the rubber tip with something different

BMI and BMR

What is the purpose of an alternating pressure seat cushion

Wrap length: 27

1 Extendable Rail

Deluxe Automatic Blood Pressure Monitor, Upper Arm Recliner & Tilt Can I replace the rubberFEATURES BENEFITS WHO Classification Irregular Heart Beat Detection One Touch Operation X Large Easy to Read Screen Date & Time Display Pulse Rate Indicator Digital Error Messages Travel Bag Auto Off Function Memory stores 120 readings (2 x 60) Average Last 3 Results SPECIFICATION Warranty 2 Years Measurement Range Pressure: 0mmHg~300 mmHg Pressure: + 3 mmHg Power Supply 4x AA Batteries or AC Adapter CA Prop 65 [WARNING: This product can expose you to