Wide Compatibility: This high gain soft antenna is specifically designed to fit Garmin GPS devices, including Astro 430, 320, 900, 220, and Alpha 50, 100. It caters to a variety of models, ensuring it meets your diverse needs for enhanced GPS performance. Enhanced Signal Range: Operating at a frequency of 136‑174 MHz, this antenna significantly boosts your signal range. Whether you're navigating challenging terrains or exploring remote areas, enjoy improved connectivity and reliability with your Garmin GPS device. Durable Construction: Made from high-quality rubber material, this antenna is both soft and durable. Its robust construction ensures a longer service life, providing you with a reliable accessory that withstands the rigors of outdoor adventures. Lightweight and Portable: Designed with convenience in mind, this handheld antenna is lightweight and easy to carry. It won't add any burden to your gear, making it an ideal choice for those on the move. Its portable design ensures you can take it anywhere with ease. Effortless Installation: Save time with the easy installation process. This antenna can be screwed directly by hand, eliminating the need for tools and allowing you to quickly set up and get back to your activities without hassle. Upgrade your Garmin GPS experience with this high gain soft antenna, designed for superior performance and ease of use. Perfect for outdoor enthusiasts and professionals alike, it offers enhanced signal range and durability in a lightweight, easy-to-install package.