The black ST-8 Super Tight Clip-On All Instrument Tuner from Snark is a clip-on tuner that has a high-sensitivity vibration sensor and a full-color display that rotates 360°. This update to the original SN-8 tuner boasts a faster and more accurate tuning chip with a higher-definition display. It can be used to tune any instrument for applications such as rehearsals, recordings, live stage, theater, and more.