Using these Bushnell binoculars is easy. First, adjust the twist - up eyecups to your comfort. Then, focus on your target using the central focus wheel. When using near water or in wet conditions, don't worry as they are IPX7 waterproof. But try to dry them off after getting wet. For maintenance, keep them in a dry place. Clean the lenses with a soft, lint - free cloth. Avoid using harsh chemicals on the rubber housing or lenses. If there's any issue, remember they come with a 20 - year warranty, so you can get them repaired or replaced at no cost.