Highly accurate mechanical metronome. Features a spring-driven mechanism for sound production, requiring no batteries. Tempo accuracy: ±1%. Variable tempo: 40 to 208 beats per minute via pendulum. Beat settings: 0, 2, 3, 4, and 6. Produces a loud, resonant mechanical sound and features a visual rhythm indicator that swings left and right. The low beat pitch differs from the pitch of each beat. Traditional pyramid (tower) design with an attractive, classic appearance. Clean white color. Size: 103 x 118 x 205mm. B07XJBDLKS