RXD (Rapid eXtra-silent stepping Drive) autofocus motor delivers impressively quiet

can be improved through contrast stretching

the T1 looks

The second generation increases horn size for a larger soundstage and enhanced directivity

Shark Matrix Self-Empty Robot Vacuum RV2300S - Factory Refurbished 2220 RXD (Rapid eXtra-silent stepping Drive)New powerful whole home cleaning solution from Americas #1 vacuum cleaning brand (The NPD Group Retail Tracking Service, based on brand level dollar sales, 52 weeks view). The Shark Matrix Self Emptying Robot Vacuum RV2300S, features incredible suction power, Matrix Clean and Precision Home Mapping. It has 50% more suction than the best selling iRobot i3 (based on ASTM F558, measured at the cleaning nozzle) and a multi surface brushroll, pulling