New software tune woodwinds, brass and stringed instruments quickly and accurately. Multiple positioning arms & rotating hubs allow many viewing angles. Ultra-wide LCD for quick, accurate readings. Advanced metronome with multiple rhythms. Dual-color LCD indicates tuning: Green: in tune; Orange: out of tune. Built-in MIC and vibration sensor ensures optimum response. Auto power off energy saver mode optimizes battery life. Flat tuning up to 2 semitones. 4 position volume control (Mute, Low, Med, High).