The Vision+ is a set-top box, similar to Sky+ and V+, that enables 100 hours of television programmes to be recorded while watching other live programmes. The service is described as providing a range of on-demand content without compulsory subscriptions. However, a BT broadband connection with a guaranteed line speed is required. A self-install version and a technician install version of BT Vision are available. This box can access standard definition Freeview broadcasts where available, on-demand SD and HD content from BT, along with linear VOD channels through BT Infinity.