Unrivaled 400mm Reach: Transform your X300 Ultra into a long-range powerhouse with a 400mm optical focal length equivalent and 4.7x magnification, bringing distant subjects vividly close.ZEISS APO Chromatic Aberration Control: Engineered with authentic ZEISS optics to effectively eliminate color fringing, ensuring crisp, true-to-life tones across high-contrast environments.Advanced Kepler Optical Structure: Constructed with an elite 1GM 14G glass element array to deliver exceptional edge-to-edge sharpness and superior light transmission.Pro-Level Stabilization (CIPA 4.5): Eliminate camera shake natively. The built-in professional stabilization works with your device to keep wildlife, concerts, and fast-action scenes perfectly locked in.Compact & Balanced Rigging: Weighing just 248g, this premium telephoto extender seamlessly integrates with your mobile setup without adding excessive bulk, making it an essential, travel-ready visual tool.