The Astra Optix PRO X-1 Golfing Laser Rangefinder is our purposeful and superior quality golfing rangefinder. In addition to accurate and fast ranging capabilities, the PRO X-1 features fully multi-coated and prism coated lens system to increase light transmission and resolution performance. Critical features include our Pin Lock Mode with vibration feedback, Voice Mode and Slope Mode. Backed by our Handshake Lifetime Warranty, the PRO X-1 golfing laser rangefinder gives you the confidence while out on the course.