Slides and Negative Films: This slide viewer is suitable for viewing slides and negative films. You can scan quality slides and negatives via scanning APP, save and share your memories. Ultra Slim Pad: This slide scanner is designed with ultra slim and lightweight pad, and A4 size is large enough to hold multiple slides and films for viewing and scanning at the same time. 3 Brightness Levels: This photo slide viewer provides provides 3 levels of brightness to adjust by gently touching the on/off switch. The LED light source can distribute light softly and evenly. APP Editing: This slide viewer light box supports APP editing, which allows you to edit photos and share them on social media. Download the SlideScan application (for scanning slides) and the FilmBox application (for scanning negatives) to scan slides and negatives and convert them into digital images. USB C Power: This film scanning light box can be easily connected to the power adapter, power bank or laptop computer via USB cable, user friendly and easy operation.