The Garmin Catalyst Racing Coach and Driving Performance Optimizer brings industry-first innovation that's changing the worlds of motorsports and marine power sports. It mounts in the cockpit to gather your performance data and provide real-time audible coaching. Immediate session analysis helps drivers of all levels achieve their full track driving potential on road courses. Groundbreaking True Track Positioning technology uses built-in accelerometers, 10Hz multi-GNSS positioning, and image processing to automatically generate your car's racing line on the track. Plus, revolutionary True Optimal Lap technology shows your best achievable time, based on lines you actually drove and can repeat. While on the track, you can hear realtime coaching cues through a compatible headset (not included) or car stereo. After your session, use the touchscreen display to immediately review your performance data and see your major areas for improvement.Manufacturer model #: 010-02345-00. Real-time audible coaching to improve your navigation performance Touchscreen display Immediate session analysis True Track Positioning automatic race-line generation True Optimal Lap achievable-time calculation Hear coaching cues through your compatible headset or stereo