The X-Rite i1 Series (aka Eye-One) is a range of colour measurement and profiling products for semi professional and professional users. Expandable and dependable, one of the key features of the 11 series is the powerful software and common interface for all the modules, making it straightforward to use and get the right results. If your reputation depends on getting the colour right, then you can place your trust in an i1 product to deliver results.