Compact and Portable: This tuner is small enough to fit in your pocket or gig bag, making it perfect for musicians . Its user-friendly design ensures that you can tune your inst ent quickly and easily, whether you're backstage or at a rehearsal. Versatile Tuning Modes: Equipped with guitar, bass, and chromatic tuning settings, this device can accurately tune a wide range of string inst ents including electric guitars, acoustic basses, mandolins, ukuleles, violins, banjos, and cellos. Enhanced Visibility with Colorful LED Display: The bright, colorful LED indicator on this tuner provides clear visibility in all lighting conditions, from dimly lit to bright outdoor environments, ensuring you can always see your tuning status. Energy-Efficient Operation: To conserve battery life and maximum efficiency, the tuner features an automatic power-off function that activates after three minutes of inactivity. This feature helps prolong the life of your batteries and saves energy. Pick up: Microphone or Clip Tuning mode: Automatic Tuning range: A0(27.5Hz)-A6(1760Hz) A4 frequency: 435-445Hz Tuning error: 1 cent Power supply: 2 x AAA batteries (not include) Colour:black Material:plastic The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * Chromatic Tuner Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.