Korg metronome MA-2

Tempo Range 30 to 252/min (BPM) Tempo Settings Pendulum Step, Full Step, Tap Tempo Beats/Rhythms 0–9 beats Quarter notes, eighth notes, triplets (straight triplets, triplets with inner beat omitted, triplets with the third beat omitted), sixteenth notes (quadruplets, quadruplets with middle beats omitted, quadruplets with the third and fourth beats omitted). Tempo Accuracy +/-0.2 % Reference Tone Twelve-tone equal temperament C4–B4 Sound Accuracy +/-1 cent or better Calibration 410Hz–480Hz (1Hz steps) Connectors Headphones jack (stereo mini jack ø3.5mm / 1/8”) Speaker Dynamic speaker (Max. 0.5W, ø23mm) Power Supply Two AAA batteries, 3V (included) Battery Life Approx. 70 hours (when using zinc-carbon batteries),Approx. 290 hours (when using alkaline batteries), (tempo 120, 4 beats, and max volume) Dimensions (W x D x H) 102 x 59 x 17 mm / 4.02 x 2.32 x 0.67 inches Weight 71g / 2.5 oz. (including batteries)