Product features:

All the features of the  TEL TAC II  plus.

Automatically records the best 2 laps from each session.

Displays 4 high rpm readings (straights) & 4 low rpm readings  (corner) + overall high reading.

Displays all 9 readings automatically when engine shuts off.

Having the exact rpm range from each session gives you information never available before in a self-contained unit. This info is invaluable for setting proper gear ratios, engine tuning, chassis setup, driver consistency etc.  Having 4 extra high rpm readings confirms the true top rpm. The 4 low rpm reading lets you know your actual rpm range, also shows the differences from each corner.