After owning the HB 51120 cordless upright for over 2 years I can now offer an informed comment on the functionality and benefits of this vacuum cleaner. Whoever designed it, thought of everything. This vacuum cleaner is lightweight but yet powerful enough to get the job done. I appreciate the little extras that were built into this unit. The swivel head allows me to get up to and into the corners. There's a little brush on the side so when you're going along edging, it picks up all the crumbs. There is a light, that really helps illuminate in dark areas. Okay The second battery and charger system ensure that I have plenty of time to complete a job. Couldn't ask for a better product and find it a great value. Thanks