The Hexa Stryker Plus Automatic Robot Vacuum Cleaner comes with an updated and improved Lithium ion battery. This 11.1V robot vacuum revolutionises the way you look at cleaning, with its 3 sensors that help to avoid it tipping over and reach every corner of the house. It has an operation light indicator and 2 side brushes to ensure not a spot of dirt will escape this futuristic cleaner. It has an anti-scratch protective band and large capacity dirt tank, yet is very easy to clean. Suitable for hard floors only.