Do I need to use the Comfort Strap that comes with the Buzzy kit?

Is my Buzzy compatable with a tourniquet even if it doesn't include one?

The strap is not necessary but may be useful for certain procedures. Buzzy® Mini and Buzzy®  XL Healthcare units can be used with disposable hospital tourniquets or hand-held in place. The Mini features a contoured and compact design that can be tucked under a standard tourniquet, or it fits easily in the hand as well. The Buzzy XL features a slot through which you can thread the comfort strap or disposable tourniquet for hands-free use.

Buzzy Personal devices also have a slot through which you can thread a comfort strap or disposable tourniquet, and include a hook and loop comfort strap with purchase.