1、FREE YOUR HANDS: These glasses have 8X magnification, after using them you can clearly see the dynamics of the float, avoiding the problem of not being able to see the target that leads to dislodging the hook. 2、COMFORTABLE TO WEAR: With ergonomically designed nose rest and 85° large nose bridge design with soft rubber cushion, it is a pressure free experience and you won't get tired after wearing it all day. 3、HD LENS: HD green film double layer optical lens can achieve no stray light and low astigmatism, which makes the telescope's imaging performance stronger and the picture clearer. 4、TRIPLE COLOR CPL FILTER: Equipped with red, yellow and grey CPL filters. You can use different filters under different light to achieve different effects respectively, effectively resist water reflection and sunlight, and enhance brightness at night. 5、ADJUSTABLE FOCAL LENGTH: You can manually adjust the zoom wheel to suit different people's needs. As long as the refractive error does not exceed ±7 you can use the focus wheel to get a clear image, and it can be used by both nearsighted and farsighted people.