At last a clear answer from Nexoptic on performance... i buy
Hello Karl, Thank you for your message. We settled on 10x as this is the widely considered the most popular magnification for sport optics devices (as it is the maximum zoom that most people can handle steadily enough for effective use). With our true 10x optical zoom, users can see almost 40x on the true HD (720p) screen. I hope this answers your question. Let me know if you have any further questions, Rhys