D'Addario Planet Waves Chromatic Pedal Tuner Features:

• Slim, small-footprint, accurate tuner is a high-value addition to your setup
• 32-bit processing and wide calibration range ensure fast, accurate readings
• High-visability, full-color display is easy to read at all ambient light levels
• True-bypass wiring for clean, transparent signal transmission when not tuning
• Aluminum enclosure stands up to tour abuse and enthusiastic performances
• Can be powered by the included 9V battery or optional 9V external power supply