Variable speed. Operates at any speed up to 10 feet per minute. Digital thermometer and temperature control. Makes it easy to set and maintain the right temperature. Digital indicator light flashes as the machine warms up. At set temperature the indicator light stops flashing and a ready light comes on. Simple controls. Membrane switches provide a compact, reliable control pad. Icons and international symbols are used for controls and safely warnings. Glitch-proof threading. To handle the most difficult aspect of using a laminator, the premier 4 has built-in threading aids.