13X50 Magnification See things 13X closer and Get Clearer and Brighter range of view with 50mm lens - The most powerful hand held monocular available in the market today, that also provides the most pleasant and clear view. Not only can you see objects 13 times closer with this monocular, with 50mm objective lens you can even calculate the distance between you and the target and the size of your target. External Armor Provides a secure, non-slip grip, and external protection. Waterproof and Fogproof Prevents moisture, dust, and debris from getting inside the monocular - designed to inhibit internal fogging. For any weather and any environment. Allows you to get the best view possible for bird watching, watching wildlife or scenery.