D'Addario PW-CT-13 Micro Universal Guitar Tuner:
This feature-packed precision tuner with limitless positioning options features a full-color display with four selectable viewing angles (2 vertical, 2 horizontal) in an attractive, compact design. The advanced tuning algorithms allow you to tune in noisy environments, while the dual-swivel clip allows for virtually any positioning for a clear view of the easy-to-read display. The retractable swivel arm also allows the tuner to be folded down, so its out of the way when not in use. With the universal, spring-loaded clamp, this tuner is able to be place in a variety of instruments and positions. Note: The current version of the DAddario Micro Tuner does NOT have a metronome.