Model zt230t Industrial Series - Method Thermal Transfer & Direct Thermal print - Connectivity USB - Maximum Label Width 4.09 Inch/ 104 mm - Maximum Ribbon Length 450 Meters - Resolution 203 dpi/ 8 dots per mm - Prints on continuous, die - cut, notch and black mark - Ultra rugged Equipped with an all - metal case for long - lasting use in the harshest environments - Perfect for logistics, healthcare