The Handtevy System is much more than a box for organization of equipment. See attachements.
This webinar link will help:
Disclosure: I am a paramedic working in South Florida who has actively been using the Handtevy System for the last 2 years. My department completely replaced the Broselow System with the Handtevy System. I also work with the Handtevy Company in helping EMS/Hospital systems adopt the Handtevy System due to its enormous benefits, and to be quite frank... amazing outcomes. See Polk County Fire Rescue Data that was collected by their Medical Director and sent to us after implementing the Handtevy System in 2014. This data is still currently being put together to be published by research groups not affiliated with Handtevy.