3.1กฐ LCD Mic&Pick Up Digital Tuner for Chromatic Guitar Bass 3 in 1 Tuner+Metronome+Tone Generator Digital Tuner for Chromatic Guitar Bass 3 in 1 Digital Tuner +Pickup Clamp for Chromatic Guitar Bass Specification: Color: Black Functions: Tuner/Metronome/Tone generator Items of tuning: Chromatic/Guitar/Bass Pickup mode: Vibration sensor/Internal Microphone Tuning mode:Auto/Manual Flat:b, bb, bbb,bbbb Tuning range: A0(27.5Hz)~A6(1760Hz) A4 Frequency range: 435~445Hz Tolerance: Less than 1 cent Tempo range: 30~250bpm Beat: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Tolerance: less than 0.5% Volume: Adjustable Dimension:16กม63กม100(mm) Battery: 2*AAA Battery(Not included) Weight: 80g Package list: 1 x Tuner 1 x Pickup Clamp