BaK-4 Prisms w/ Phase Coating: Increases contrast and resolution for sharper more detailed images. Fully Multi-Coated Optics: Allows maximum light transmission through the optical path for brighter images. 6.5’ Close Focus: Detailed, up close observation of subjects in close proximity. Ideal for watching birds, insects, plants, etc. Compact and Lightweight: Fits in a pocket or glove box. Easy to carry on long excursions. Twist-up Eyecups: Twist up and down with multiple stops for correct positioning of the users eyes for comfortable viewing with or without eyeglasses. Polycarbonate frame: Strong and durable polycarbonate body. Provides structural integrity while keeping the weight to a minimum.