This AP slide viewer is a great product for viewing 35mm mounted slides. It has a large double lens screen with 2x Magnification.

It is illuminated and operates on 2 1.5v AA Batteries (not included

Push the slide down to view and make the backlight turn on.

Specifications:

2x high magnification for detailed viewing of slides
 
Lamp: 2,5 V. 300mA E 10
Lens: 2.5 x 2.1 in giving 2x Magnification
Dimensions (WxHxD): approx. 3 x 2.4 x 4.1 in.
With hinged prop.
Made in Spain