Main Features:5 sized lens: 2X, 3X, 4X, 5X, 6XRotating the lens tube to continuously change the magnification factorNight vision design, clear looking targets even when there is little bright light around objectsHigh magnification design to meet the need for weak sight person or the close / far observation of the objectThe visual aid telescope apply to medical treatment / biology / horologe / printing etc. Brand: BIJIA Type: Binoculars For: Auto racing,Beach,Bird watching,Boating/Yachting,Horse racing,Hunting,Outdoor activities,Sports,Theater Material: Rubber Color: Black Amplification Factor: 2.5X – 15X Objective Lens (mm) : 11 mm Field Angle(degree): 10.5 Degrees Package weight: 0.320 kg Product size (L x W x H): 19.20 x 14.70 x 3.40 cm / 7.56 x 5.79 x 1.34 inches Package size (L x W x H): 21.00 x 5.60 x 7.20 cm / 8.27 x 2.2 x 2.83 inches Package Contents: 1 x BIJIA 2.5X – 15X Telescope, 2 x Lens Cover, 1 x Hang Strap, 1 x Lens Cloth, 1 x Storage Bag, 1 x Leather Case, 1 x 2X Lens, 1 x 3X Lens, 1 x 4X Lens, 1 x 5X Lens, 1 x 6X Lens