Description [ Professional Powerful Binoculars ] Designed with 12X power magnification, 42mm large objective lens and 367ft/1000yds large field of view good for fast moving subject, ideal for hunting, hiking, exploring, viewing, sailing, bird watching, concert, outdoor sports etc.[ Easy to Focus ] The smooth and large center focus knob makes it simple to operate and easy to focus on. Corrective optical coating is good for color fidelity and minimizes distortion. Diopter System adjusting the imbalance vision of both eyes.[ Adjustable Eye Cups ] The rubber covered eyepiece can be twisted up and down for different people adjusting a proper eye relief. Besides, the eyeglass wearers can adjust the eye relief through rising eye cups and feel more comfortable.[Upgraded design] Durable structure with odorless rubber armor for shock-resistance and anti-slip grip, making it not only in decent appearance of more wear-resistant and moisture-proof, but also perfect for outdoor activities such as climbing, hiking, travelling, watching wildlife and scenery.