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BOSS TU-02 Clip-On Tuner


Free 2-Day Delivery

30-Day Return Policy

Best Price in the Market

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Bright Color Display with Adjustable Viewing Angle
With a bright color display, swivel adjustment, and four selectable modes, the versatile TU-02 offers reliable tuning for guitar, bass, ukulele, and other stringed instruments.

  • Compact and accurate clip-on tuner with high-contrast color display
  • Four tuning modes: chromatic, guitar, bass, and ukulele
  • Up to 24 hours of continuous runtime with CR2032 lithium battery
  • Auto power off feature conserves battery life when not in use

Secure and Reliable
The TU-02's high-contrast color display provides accurate, easy-to-view tuning everywhere you play. The rugged, padded clip securely grips to your instrument's headstock, while swivel adjustment lets you position the display for the optimum viewing angle. A single CR2032 lithium battery provides continuous runtime up to 24 hours, and an auto power off feature conserves battery life when the tuner is idle.

Works with Guitar, Bass, Ukulele, and More
With its versatile modes and quick-change design, you can tune a variety of instruments with the TU-02. Choose from standard tuning modes for guitar, 4- and 5-string bass, and ukulele, or chromatic mode for alternate tunings and other stringed instruments. Flat tuning over a range of two semitones down is supported, perfect for players who like to tune low for a heavier sound. And with adjustable calibration from 430 to 450 Hz, you can set the tuner to a reference other than the default 440 Hz standard if needed.



  • Tuning Range: A0 (27.5 Hz)--C8 (4,186.0 Hz
  • Reference Pitch: A4 (430--450 Hz)
  • Tuning Accuracy: +/- 1 cent
  • Modes: CHROMATIC / GUITAR / BASS / UKULELE, Flat Tuning: Regular--2 semitone lower
  • Control: POWER/M (mode) button, A4 button, Flat button
  • Display: Backlit color LCD
  • Power Supply: ACR2032 lithium battery x 1
  • Current Draw: 7.5 mA
  • Expected battery life under continuous use: Alkaline: Approx. 24 hours
  • *These figures will vary depending on the actual conditions of use.
  • Auto off function: Approx. 5 minutes
  • Accessories: Owner's Manual, CR2032 lithium battery


Size & Weight


  • Width: 28 mm, 1-1/8 inches
  • Depth: 38 mm, 1-1/2 inches
  • Height: 50 mm, 2 inches
  • Weight (including battery): 25 g, 1 oz

*The specifications are subject to change without notice. 

Payment & Shipping 



  • Import duties and shipment costs are all included in the price for customers in the USA.


  • Your package will be shipped from one of our fulfillment centers in the USA.
  • Free 2 business day delivery with a tracking number in the 48 contiguous states of the USA.
  • The delivery to Alaska, Hawaii, and Puerto Rico can take more than 2 days.
  • Sometimes it can take a little longer due to unforeseen circumstances.
  • Our system cannot ship to PO Boxes.
  • Currently, we cannot ship outside the USA. If you are outside the USA, please contact us.

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