Mechanical Metronome - Wsm-330

Features:
Precision spring and top grade metal mechanism.
Tempo error is less than 1%, high accuracy.
Traditional demonstration of beat by wood block chip sound.
Variable tempo from 40 to 208 bpm.
Bell on the downbeat is adjustable, 5 positions including 0, 2, 3, 4, 6.
Powered by winding mechanism, no requirement of battery.

Diagram of metronome:
Operation:
1.Pull the tone selector to 0, 2, 3, 4 or 6 according to your need.
2.Move the sliding weight up or down and line the top at the desired tempo.
3.Turn the winding key clockwise to wind the spring inside, move the pendulum to left or right side.

Specifications:
Color: Black
Tempo range: 40-208bpm
Beat: 0, 2, 3, 4, 6
Tempo error: ?1%
Power: Winding mechanism
Product size: Approx.11.2 * 10.3 * 20cm / 4.4 * 4.1 * 7.9in
Product weight: 479g / 16.9oz
Package size: 12.3 * 12.3 * 24 / 4.8 * 4.8 * 9.4in
Package weight: 590g / 20.8oz

Package List:
1 * Cherub WSM-330 Metronome (Black)
1 * User manual (English)