CH54113 HushTone Upright Vacuum with IntelliBelt is the Strong, Silent Type. Cause less disruption with 69 dB sound when you want it and more performance when you need it. Reduce repair costs and maintenance time with the a quick-change cord and IntelliBelt, a permanent belt protected by automatic shutdown when brushroll jam occurs. The sealed allergen system, with Hexaguard Technology, traps 99% of dirt, dust and pollens down to 0.5 microns for cleaner air. This vacuum cleaner is ready to use right out of the box: No assembly required, and no tools are needed to access the brushroll and belt system.