iOptron ST-640 Digital Microscope with LCD Screen

The iOptron ST-640 Digital Microscope with LCD Screen has received a mix of reviews from customers. While some customers have found it to be suitable for high school students and have appreciated its quality and the extras it comes with, others have faced issues with the product, such as defective LCD screens, poor electrical connections, and inadequate instructions. One user was pleased with the microscope, noting its solid build, the ability to use a traditional eyepiece, and the inclusion of extra slides. They also mentioned the versatility of power sources and the functionality of the camera. However, they pointed out the lack of instructions for the extras and potential hazards, as well as issues with the focus knob and the plug not staying in properly. On the other hand, some customers experienced problems with the digital screen flashing on and off, difficulty in getting the screen to power on, and inadequate lighting for viewing. One user even received a defective unit that failed to function properly. Despite the mixed reviews, there was positive feedback from a customer who bought the microscope for their grandsons and found them to be thrilled with it, appreciating the viewing screen. Overall, the iOptron ST-640 Digital Microscope with LCD Screen offers some useful features but also comes with drawbacks such as potential defects, inadequate lighting, and insufficient instructions. **