Our new HushTone 2-Speed motor causes less disruption with 69 dB sound when you want it and more performance when you need it. We understand that this is a tool to complete your job effectively and efficiently. That’s why we designed your HushTone with no-tool maintenance, IntelliBelt, and a sealed allergen system. HushTone 2-Speed motor IntelliBelt is a permanent belt protected by automatic shutdown when brushroll jam occurs Sealed Allergen System with Hexaguard HEPA media filter No tool/assembly and maintenance Quick change cord Performance indicator.