The 28.8v motor in the HSMR2A7UBUK is so powerful that you won't have any problems picking up even ground in dirt from your carpet. You can also use the flexible hose to use external tools such as a stubborn dirt brush & a crevice tool.
Power is controlled from the handle, you can also select from 3 different power levels from the handle. You don't need to use the vacuum in its most powerful mode all the time, just for more stubborn dirt, on its lowest power setting, the HSMR4AOUK will deliver upto 60 minutes of cleaning time whilst the maximum power level gives you 20 minutes of use. The cleaner takes a total of 2 hours to fully charge. The motorized floor tool digs deep down into your carpets but if you choose to use the external flexible hose, when you lock the cleaner in the upright position, the brush will switch off to avoid damage to flooring. When cleaning the HSMR2A7UBUK also has an Ultra violet light which removes 99.99% of bacteria from the cleaned surface.