The list of opera glasses produced by LZOS:

		BGN 2.5x24   [price: 50.00 USD]   opera glasses more details >>> magnification: 2.5x   eyepiece focusing range: -5...+7 D angle of view: 12.4 degrees   dimensions: 100õ34õ53 (mm) diaphragm diameter: 24 mm   weight: 0.14 kg
		BGF2 4x36   [price: 55.00 USD]   opera glasses more details >>> magnification: 4x   eyepiece focusing range: -5...+8 D angle of view: 7 degrees   dimensions: 115õ42õ69 (mm) diaphragm diameter: 36 mm   weight: 0.3 kg
		BGT 3x32   [price: 52.00 USD]   opera glasses more details >>> magnification: 3x   eyepiece focusing range: -5...+5 D angle of view: 13.46 degrees   dimensions: 40õ112õ52 (mm) diaphragm diameter: 32.5 mm   weight: 0.25 kg
		BGT 4x32   [price: 58.00 USD]   opera glasses more details >>> magnification: 4x   eyepiece focusing range: -5...+5 D angle of view: 8.5 degrees   dimensions: 40õ112õ58 (mm) diaphragm diameter: 32.5 mm   weight: 0.25 kg
		Zrachok-8   [price: 80.00 USD]   monocular more details >>> magnification: 8x   eyepiece focusing range: -5...+5 D angle of view: 6 degrees   dimensions: 73õ52õ30 (mm) diaphragm diameter: 20 mm   weight: 0.085 kg