The BOSS TU-2 Chromatic Tuner incorporates BOSS' world renowned TU-Series tuner technology into an ultra-convenient stompbox design. For the first time ever, guitarists and bassists can now tune their instruments with BOSS accuracy with just a single stomp. Features: BOSS world- renown TU-Series tuner accuracy in a convenient stompbox design Mute/Bypass select for silent tuning with a single stomp 11-point LED indicators and new "stream" meter display tuning discrepancy via speed and direction of LED's (speed of LED movement gets slower as pitch becomes more accurate) 7-segment LED displays string and note names; easily visible on dark stages Seven easy tuning modes include Chromatic, Guitar Regular, Guitar Flat, Guitar Double Flat, Bass Regular, Bass Flat, Bass Double Flat Tuning mode setting and display style choice stored in memory Adjustable reference pitch from 438 to 445Hz Footswitchable Tuner Off mode preserves battery life by disabling LED's.