Check the listing for details. Boss TU-3 Chromatic Tuner. Color: x, Condition: New. Listed at 104.99 USD. Boss TU-3 Chromatic Tuner Austin Bazaar is an authorized Boss dealer. 21-segment LED meter with brightness controlHigh-Brightness mode enhances meter visibility outdoorsAccurate to +/- one centAccu-Pitch Sign function provides visual verification when tuning is completeChromatic and Guitar/Bass mode (tune by string number, with support for 7-string guitars and 6-string basses) The world's top-selling stage tuner, the Boss TU-2, evolves and improves with the debut of the new TU-3. Housed in a tank-tough Boss stompbox body, the TU-3 features a smooth 21-segment LED meter with a High-Brightness mode that cuts through the harshest outdoor glare. Choose between Chromatic or Guitar/Bass tuning modes, and enjoy visual pinpoint tuning verification with the Accu-Pitch Sign function. The TU-3 incorporates a convenient Note Name Indicator that can display notes of 7-string guitars and 6-string basses, while the Flat-Tuning mode can support up to six half-steps. It's the new-standard tuner that no guitarist or bass player should be without! Tuning Range: C0 (16.35Hz)-C8 (4186Hz) Reference Pitch: A4=436-445 Hz (1Hz step) Tuning Accuracy: �1 cent Power Supply: DC 9 V: Dry battery 6F22 (9 V) type (carbon), Dry battery 6LR61 (9 V) type (alkaline), AC Adaptor (PSA series: optional) Current Draw: 30 mA (DC 9 V), 85 mA (DC 9 V, when High Brightness mode is on) Accessories: Owner's Manual, Leaflet ("USING THE UNIT SAFELY," "IMPORTANT NOTES," and "Information"), Dry battery/9 V type (6F22) Options: AC adaptor: PSA series, Parallel DC cord: PCS-20A SKU: BOS-TU3