Capable of recording your on-track telemetry and lean angle, the Starlane Stealth GPS-4 Race is an ultra-compact Motorcycle Lap Timer using a dual satellite receiver. An external battery cable is included making it the easiest lap timer to mount on a sportbike race motorcycle thanks to its small size and 3.7 oz. low weight. Many racers simply mount using the supplied industrial strength velcro saving time and money at the track. A high-contrast LCD display is backlit, glare-resistant and easy to read during bright and sunny conditions. The pre-loaded track database includes all major North American racetracks including Chuckwalla Valley Raceway, Barber Motorsports Park, Circuit of the Americas and New Jersey Motorsports Park. *At the end of the session you can quickly view all your lap times right on the display and export your session data (on track position and lean angle) for analysis and video overlay.