... high-definition blue membrane telescope. its unique built-in optical wide-angle and the design of the wheel axis field of view ... blue film magnification: 12 times (real rate) Net Weight: 800g lens: 50mm eyepiece: 13mm Size: length 170mm, width central 180mm, thickness ... field of vision bright, ultra-clear, as the built-in wide-angle lens. its unique structural design of a better effect of. telescope ...