Two height adjustment styles to suit your needs - Threaded model: adjusts from 40 to 50 cm with a simple twist. - Pneumatic model: adjusts from 55 to 70 cm at the press of a button. This makes height adjustment easy and convenient for your boating tasks. Effortless seating direction - 360-degree rotation design enables all-round seating direction adjustments. - Provides a clear vantage point and easy viewing of your surroundings from anywhere on the yacht. Durable base and construction - Built with high quality materials on a sturdy base. - Designed to resist wear and provide long service life and good durability. Easy installation and broad compatibility - Wide adaptability and user-friendly design. - Quick to install without complex tools or professional skills. - Compatible with most boats and yacht seating systems. Practical use scenarios - Long-range sailing: adjust seat height for comfortable helm position and rotate to monitor the deck and surroundings. - Docking and close-quarters maneuvering: rotate to communicate with crew and increase awareness of steps, lines, and clearance; adjust height for optimal visibility. - Fishing or sightseeing on deck: use 360-degree rotation to scan the horizon and switch viewpoints without standing up. Note: The description preserves the original product features, models, and functions, including the threaded 40-50 cm range and the pneumatic 55-70 cm range, the 360-degree rotation, the durable base, and the easy installation for most boats and yachts.