1,magnification: 8x, 10x 2, the diameter of the objective lens: 42mm 3, field of view: 8x: 143M/1000M, 10x: 114M/1000M 4, Nitrogen filled 5, the lenses are fully coated 6, waterporoof 7, fogproof Origin CHENGDU city Weight 910 Grams Minimum order 100pcs