The AIRBEL D4 model is a powerful, full-size, ultra-quiet, canister vacuum cleaner with three on-board attachments, a giant 1.5-gallon bag, an unmatched 40-foot cord and 52-foot cleaning radius, protective rubber-coated wheels, a durable telescopic tube with quick-release connections, and a full bag or clog indicator.It also features excellent filtration, and a one-of-a-kind LED indicator that enables suction power to be optically monitored. A unique tapered suction hose with a 320° rotating canister connection increases airflow velocity , minimizes clogs, improves maneuverability , and its soft-foam bump er protects the vacuum, furniture, and walls from scuffs and scratches. The D4’s commercial-quality ET-1 power head cleans both carpets and hard floors, has excellent pet hair removal, provides manual brush roller shut off, and the extension side of its L-shaped contour makes cleaning under counters easy. A parquet brush for cleaning hard floors with straight suction is also included. The ET-1 has a 3.5-inch horizontal cleaning profile, tool-free brush roller removal, and automatic shut off due to brush roller obstructions. The D4’s suction adjustment switch is located on its ergonomically designed handle, which also provides users effortless control of the power head’s 180° steering ability.