This tuner has a fast response, good color visibility, and is intuitively easy to understand. It has a discreet, compact design and features a full-color display. It also has functions such as auto power off and pitch calibration. You can set it to a comfortable viewing angle by rotating the two drive parts. White might be a limited edition color. The battery (CR2032) is included and working, but the remaining charge is unknown. Please consider it as a bonus. Instant purchase without comment is welcome! Thank you very much.