The 30-90x100mm Gladiator Waterproof Straight Spotting Scope by Barska has a large 100mm objective with a wide powerful magnification spread of 30-90x. This scope is engineered for long-range use when hunting, birdwatching, or outdoor observation, even in low light. Waterproof and fog proof with a rubber armor-covered housing, it's tough, rugged, and ready to go the extra mile. Multi-coated optics with the classical Porro prism design contributes to a sharp, bright, and clear viewing experience.