A Twin-Tray System, to choose between a Universal Slide Tray for 3650 slides & Circular Tray for 100 slides.A Remote Control with cord for advancing the slides in any direction.A dual Switch mode that operates the cooling fan separately.Equipped with a powerful Halogen Lamp 24 volts- 150 watt.A Unique Thermostat device which automatically cuts off the lamp in case of overheating.Auto focus by thyristorized infra-red double Cds Autofocus Systems.Adjustable Auto timer with 5-40 seconds.An elegant easy-to-carry Case.