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Specifications Tuning Range A0 (27.5 Hz)--C8 (4,186.0 Hz) Reference Pitch A4 (440 Hz only) Tuning Accuracy +/- 1 cent Tuning Mode CHROMATIC / GUITAR / BASS / UKULELE Control Power switch / Mode switch Display backlit LCD Power Supply CR2032 lithium battery x 1 Current Draw 6 mA Expected battery life under continuous use Approx. 25 hours * These figures will vary depending on the actual conditions of use. Auto off function Approx. 7 minutes Accessories Owner's manual CR2032 lithium battery Size and Weight Width 56 mm 2-1/4 inches Depth 31 mm 1-1/4 inches Height 32 mm 1-5/6 inches Weight (including battery) 30 g 2 oz
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BOSS TunersBOSS Tuners BOSS offers a wide selection of tuner models for all types of musicians.Read more… Tuner HistoryHow to Tune Your Guitar A short history of BOSS compact tuners.Read more…
Support Owner’s Manuals If you have questions about operating your Roland product, please check our Knowledge Base for answers to the most common questions. You can also contact our Product Support department by phone or email. In addition, we have a library of Owner’s Manuals and Support Documents that you can download and reference. Owner’s Manuals [8 Languages] TU-01 Owner's Manual