MAIN OVERVIEW FEATURES: Media Width: 2 1/8"Media Length: 2 3/4"Number of Labels per Roll: 400Print Technology: Direct ThermalColor: WhiteCompatibility: Dymo LabelWriter 310, 320, EL40, EL60, CoStar LabelWriter XL, XL Plus, 330 Turbo, Turbo, XL Turbo; Seiko Instruments Smart Label Printers 100, 120, 200, 220, 240, Pro, EZ30 and PlusDymo LabelWriter 450 Series