From AIM description:
The AIM SOLO lap timer is two tools in one for a great price: Lap Timer and Data Logger. The SOLO is a completely automatic lap timer based on GPS technology, with pre-programmed tracks for most road courses in the world. Using its GPS based location, it identifies the finish line coordinates and automatically starts sampling and displaying lap times. All you need to do is turn it on before you head out on track and the SOLO takes care of the rest!

The AIM SOLO can be used in all of your performance situations: circuits, hill climbs, regularity, point to point races (autocross), and general performance tests (0-60 mph, 1/4 mile, braking, etc). The SOLO displays and records speed, GPS location (your driving line), lateral accelerations, forward acceleration, braking... all of the data you need while racing. You can review your data immediately after each session, this helps you analyze and improve your performance. Or you can overlay this data onto your in-car video to use for analysis at a later time.

Like new. Works fine. Orig - $399. Comes with charging cord, in-car power supply cord, and original manual. Asking $100.
Tom (Land line) - 480 725 8698