... (domestic brand) Origin: Yunnan, China Specification: 12x50 blue film magnification: 12 times (real rate) Net Weight: 800g lens: 50mm eyepiece: 13mm ... -blue film, clear and comfortable vision large field of view. 12 plating layer lens broadband blue membrane, the open field of ... production, to pay qualified certificates; Chinese and Maintenance Manual PANDA-12*50-2