Yunnan Yuanjin Optical Co., Ltd. has been engaged in the production of coin operated binoculars for a long time. Against the problems that the optical effect is poor, and the performance is not stable enough at present. The coin operated binoculars are used outdoors for a long time, and exposed to the weather and rain. It’s not easy to keep good optical performance and electrical stability.Based on over 10 years of production of coin operated binoculars, Yunnan Yuanjin Optical Co., Ltd. launches generations of products, like Gen. I, Gen. II and Gen. III, to accept the baptism of nature. Meanwhile we study the coin operated binoculars of other countries and learn from each other.