Key Features: 1. 7-inch large display, wide viewing angle and large field of view. 2. 3X-60x infinite amplification, clear and smooth. 3. 12 color modes to meet different people need. 4. Freeze image for easy remove reading. 5. Long depth of field lens for different working distances. 6. The rechargeable lithium battery support the working time up to 4 hours Max. 7. Voice prompts for each program. 8. Desktop brackets and protection cover protect the screen more effectively. 9. TV-OUT function for connecting with TV.