Mugig Tuner Clip-on Tuner for Guitar, Ukulele, Bass, Violin, Chromatic Tuning,Large Clear Colorful LCD Display (38% Greater View),Calibrated Pitch,Battery Included, Auto Power Off Supports multiple tunings: Chromatic, Guitar, Bass, Ukulele, Violin High sensitive vibration tuner responds fast, which ignores the background noise, is ideal for loud, chaotic environment . Pitch calibration from 430HZ to 450HZ Super clear LCD display(38% greater view), barely shade incurred, rotates 360 degree for easy viewing from any angle Single coin battery operated,Easy to read and operate. auto power off for no operation in 5 minutes Scientific design with solid construction ensure no break in use. Environment-friendly ABS plastic applied, no inferior material used. FCC/CE certified,ROHS compliant. Clear <span class="a-text-bold">LCD display</span>(38% greater view), barely shade incurred, rotates 360 degree for easy viewing from any angle. Single coin battery operated,easy to read and operate. <span class="a-text-bold">auto power off</span> for no operation in 5 minutes. Scientific design with solid construction ensure no break in use. <span class="a-text-bold">Environment-friendly </span>ABS plastic applied, no inferior material used. Perfect for string instruments like acoustic/classical/electric guitar, bass, violin ,ukulele,mandolin,banjo to tune. Small size ,however with super bright &amp; big LCD display, which has<span class="a-text-bold"> 38% greater view</span> than common tuner on the market. The note is flat when the needle moves to the left side and LCD display changes to orange The note is in tune when the needle is in the middle and LCD display changes to green The note is sharp when the needle moves to the right side and LCD display changes to orange