Operating the device is simple. Flipping a switch turns the device on, flipping the other way turns it off. The issue is the placement of the button. When using it in its intended situations, people with normal-sized hands can hardly reach the button. People with smaller-sized hands, really have issues reaching the button. The texture of the button and grip is too slippery, it needs some texture applied to it.
When using the attachments included in the box, the user has to go back and forth grabbing the attachments as needed. They have to be stored in the box, as there are no attachment points on the device itself. There is a small indentation in the bottom, near the power cord, meant to put a smaller brush, but from testing, it shows that the connected attachment easily falls out from vibrations from the motor and hitting the cleaner on furniture etc.

Using the cleaner with attachments, makes it very unbalanced. It becomes front-heavy, adding strain to the muscles in the hand, wrist and arms.
The cable is plenty long enough, but that’s also a drawback. There is no system of storing and organising the cable. It just hangs there and can easily tangle. Also, the cable gets in the way when cleaning, as can be seen on the photo taking during testing.

The device should be easy and ergonomic to use. The secondary handle is there for support. The newly designed handle must be designed with respect to the old shape. 

The secondary handle should be interchangeable, adaptable to everyone’s preferences.  

The new wireless system allows for smooth operation without cables getting in the way.

The new button placement should be more ergonomic to use and be easier to find.

Increase the size of the handle, so people with bigger hands can also use the device.

Add handle to help in counterbalancing the out-of-balance cleaner with add-ons.

Add texture or anti-slip pad to the handle, to make it less slippery in use.

These requirements make the device more ergonomic and easier to use. The new button placement helps in finding the button blindly. The extra vertical handle is also handy, for usage in some situations, like high above the ground or in a corner. The parts, thanks to the 3D technique, have a nice texture to them, allowing to user to have more grip on the device. The exhaust vents are in the same spot as the original design, as they didn’t interfere with the user’s actions.

The original attachments still fit and can of course still be used. The shortened tube is also an advantage, as this decreases the overall footprint and it increases sucking power, because the distance from the opening to the motor is smaller, resulting is a larger sucking power.

The secondary handle is also a plus. This allows users to interact differently with the device. If the user wants to use two hands, this is now a possibility, where it used to be not present on the old device. Also, the extra handle is low profile and it doesn’t take up a lot of space. If the user wants, the handle can be exchanged with different shapes to suit personal taste.

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