Simple to operate, you can use the N-Scorer with NINCO, Scalextric, SCX, Artin, and other 1/32 systems if you put a couple of blocks under both sides. It works perfectly with Carrera track as well. Note: Due to the angle of the light beam from the N"Scorer, there can be problems counting laps for lower profile cars (such as F1 cars) on the narrow track of SCX, Scalextric and Artin. Other features: Complete wireless setup: Uses 4 AA batteries* "Straddles" the track. Place it anywhere Carry it with you Simple three button control panel Easy reading display Two program modes: set number of laps, set length of race time Set up to 999 laps or up to 99 minutes Displays laps, minutes, and seconds to two decimal places Five LED"s and sounds signals Fastest lap & laps completed by each driver can be recalled Automatic shut down after three minutes of inactivity * Batteries not included