Feature:1. VERSATILE: The Metronome Tuner combines a metronome, tuner, and tone generator, all in a pocket sized unit.2. TUNING PROGRAM: The Digital tuner provides precise and easy tuning of guitars, basses, and 12 equal tempered instruments.3. 435HZ TO 445HZ: With a wide detection range of A0 to A6 and a pitch calibration range of 435 to 445Hz, you can quickly and accurately tune almost any instrument.4. DAILY PRACTICE: The perfect daily practice partner for any musician, band director, music teacher and professional musician to improve your playing.5. BATTERY POWERED: The Guitar tuner metronome is powered by two AAA batteries, making it easy for musicians to take it with them(battery not included).Specification:Item Type: Tuner MetronomeMaterial: ABSTuning Items: Guitar, Bass, 12 Equal TemperamentA4 Frequency Range: 435Hz-445HzBattery Type: AAA Battery x2 (Battery Not Included).Package List:1 xTuner Metronome1 x User Manual