The feature packed tuner your audience will never see. The tuner features a reversible screen, multi-color display and metronome in a housing that blends with the aesthetics of any instrument. It's so small, convenient and accurate, you'll want one for every instrument you own! -Mounts behind or on front of headstock -Reversible multi-color display - Visual metronome - Fast and accurate tuning While the features grew, the size of the NS Mini just got smaller introducing the NS Micro Headstock Tuner. The NS Micro offers improved accuracy, faster response, expanded calibration range, visual metronome mode and an improved ratchet design. A highly sensitive piezo transducer and easy to read multi-color backlit display allow smooth and highly accurate tuning in noisy, dim or well-lit environments while the micro design and reversible screen allow the tuner to hide effortlessly behind or mount on the front side of the headstock allowing the tuner to remain clamped to the instrument inside most cases when stored. A 360 degree swivel mechanism and adjustable padded clamp, offers optimal viewing angles and maximum positioning flexibility. As a result, the NS Micro is equally at home on left and right-handed instruments as well as on small and large headstocks, making it the ideal choice for the widest variety of players and instruments. The NS Micro is powered by a readily available CR2032 battery (included) and provides maximum battery life utilizing an auto-off function, shutting the tuner off automatically after several minutes from power up. Enjoy effortless and inconspicuous tuning at a great value with the NS Micro Headstock Tuner. A Ned Steinberger design. Built-in piezo transducer picks up instrument s vibration rather than sound Improved software for faster response and improved accuracy Tri-color reversible backlit LCD screen makes it easy to tune in dark environments while allowing mounting in front or behind headstock Wide calibration range (410Hz to 480Hz) and visual metronome Compact design blends into the aesthetics of instrument while adding considerably less weight than other headstock tuners Tunes acoustic and electric guitars, basses, mandolins, banjos and other stringed instruments D Addario electronic tuners are designed by musicians for musicians featuring intuitive features, easy to read display's, and exceptional tuning accuracy.