Feature: 1. Waterproof marine telescope is designed for ocean and land observation. Suitable for outdoor viewing, bird watching, hunting, etc. 2. Internal diastimeter scale and directional compass with illuminated switch, can indicate the distance, size, or direction of the observed object. 3. Durable rubber armored coating is comfortable to hold and rugged enough to stand up to any conditions. 4. The nitrogen inside the binoculars can eliminate atomization and mold on the inner lens surface, even under extreme conditions such as heavy rain and high humidity. 5. High refractive index BAK4 prism has bright, clear images and sharp contrast, providing you with every detail of the object. 6. Large lens design, 23MM lens for more comfortable viewing of objects without causing eye fatigue, dizziness, and a wide‑angle and high‑definition visual combination. 7. Binoculars have a large 50mm objective lens, which can provide the maximum brightness of the image even in low light conditions, such as at dusk and dawn. 8. All‑optical glass lens, nitrogen‑filled waterproof design, bringing you better using experience. Specification: Condition: 100% Brand New Item Type: Telescope Material: Rubber + Glass Optional Color: Military Green, Black Magnification: 10 Times Caliber: Approx.50mm / 2in Prism System: For Polo Prism Glass: BAK4 Focusing System: Left Eyepiece and Right Eyepiece Field of View: 396FT/1000YDS Viewing Angle: 5.6 Eye Cover: Fold Down Coating: FMC Battery: Button Battery(Included) Battery Capacity: 100MAH . Package List: 1 x Telescope1 x Bag1 x Battery1 x Pack of Wipe Cloth1 x Strap1 x Instruction