Designed in conjunction with Ned Steinberger, the Planet Waves NS Mini Headstock Tuner features a lightweight and easy-to-use design and a 360° swivel mechanism for maximum positioning flexibility. The highly sensitive piezo transducer and backlit display allows smooth and accurate tuning for a wide range of instruments (from 5-string bass to ukulele). It is useable on left and right-handed instruments as well as on small and large headstocks. Battery included. Offers adjustable calibration between 410 Hz and 480 Hz.