Features 1. Three in one design: mixer, metronome, and tone generator. 2. The largest and unique color LCD display ensures easy viewing under any conditions. 3. Equipped with a 360 degree rotating clip that can be adjusted to the perfect viewing angle. The clamp has anti slip function and can stably clamp onto the instrument. 4. Accurately and sensitively tune the chromatic scale, guitar, bass, ukulele, and violin. 5. If there is no operation for more than 5 minutes, it will automatically shut down and save the data. Energy saving and environmental protection, very practical. Specification Pronunciation projects: Twelfth Avengers, Guitar, Bass, Yukrili, Violin Pronunciation mode: C Pronunciation range: 0A-8C A4 frequency range: 430Hz-450Hz Pickup accuracy: 1 tone minute Beat speed range: 30-280bpm Beat: 0-9 Time value: 0-8 Configuration attachment: User manual, 2 AAA batteries Material: ABS Color: Black Size: 10 x 4 x 4 cm Weight: 125 g Package Include: 1x Color Screen Electronic Calibrator