Visionking Binoculars 5x25 Binocular BAK-4 roof Binocular Telescope Sports Theater Racing Concert Extra Wide Angle Binoculars Nitrogen filled and O-ring sealed for Waterproof/Fogproof Long eye relief for eyeglasses wearers BaK-4 prisms offer the clear, bright and crisp images Durable and Protective, Rubber-armored