Features CRM CRdM
Functionality Measures Compression Rate (indicated by lights) Measures Compression Rate (indicated by lights) and Measures Compression Depth (audible beep)
Wrist Band Slap-Style Latex Free Silicone Rubber Tongue & Buckle Style Latex Free Silicone Rubber
Power on/off Function Conventional Button Touch-Face Technology
Auto Off Yes, after 3 minutes of inactivity Yes, after 2 minutes of inactivity
Power Source Replaceable Battery CR2032 (Battery included) Permanent Rechargeable Lithium Battery (USB charging cord included)
Battery Life Varies with usage 3-4 hours
Carry Case Blue EVA Carry Case Black EVA Carry Case
Warranty One Year One Year