 Book 9 Plus model has a 13.3" touchscreen panel with qHD+ (3200 x 1800) resolution display and aluminum single-shell body.Book 9 consists of 13.3" display size model with FHD (1920 x 1080) resolution and magnesium enclosure, and 15.6" display size model with FHD resolution display with single-shell body.Two additional models with plastic enclosure is also offered; Book 9 Lite with 13.3" HD resolution display and Book 9 Style with 15.6" FHD resolution display.