https://www.allmakesvac.com/blogs/news/unveiling-the-best-upright-and-canister-vacuums-of-2023-a-wirecutter-review
The three AIRBELT K models are powerful, ultra-quiet, mid-size canister vacuum cleaners that feature three on-board attachments, a large .8-gallon bag, a generous 25-foot cord and 37-foot cleaning radius, protective rubber-coated wheels, a durable telescopic tube with quick-release connections, and a full bag or clog indicator. They also feature excellent filtration, a tug-and-retract cord rewinder, and a soft-foam bumper that protects the vacuum, furniture, and walls from scuffs and scratches.
The K series offers two straight-suction models that provide a choice of cleaning heads. The AIRBELT K2 Kombi includes a combination nozzle with retractable bristles for use on rugs and hard floors, while the AIRBELT K2 Turbo includes an air-driven turbo head for rugs and a parquet brush for hard floors. Both models have a suction-control knob that is located on the canister body.
The AIRBELT K3 Premium offers much more! In addition to a parquet brush, it includes the commercial-quality ET-1 electric power head that cleans both carpets and hard floors, has excellent pet hair removal, and the extension side of its L-shaped contour makes cleaning under counters easy. The power head also offers a super-low 3.5-inch horizontal cleaning profile, tool-free brush roller removal, and automatic shut off due to brush roller obstructions. Foremost among its many features, the K3’s dual-control handle provides unsurpassed user convenience with an integrated on/off switch for the brush roller, a slider switch that adjusts suction power, and it facilitates effortless control of the power head’s 180⁰ steering ability.