The Starlane Stealth GPS-4 Lite 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 times.