Teak Antique Vintage Style Mini Mechanical Metronome Piano Guitar Violin Musical InstrumentsFeatures:-Adopting high quality pure copper clock mechanism、offer you a precision rhythm-Adopting pyramid shape and rigorous design style、beautiful and practical-Help children develop speed concept-Help us to play music with more smooth and steady rhythm-Help us to focus on、 improve the practice efficiency-Precision spring mechanismSpecifications:Material: Teak + copperColor:wooden colorSize: 33*115*205mmPrecision: spring mechanismTempo: 40~208bpmTolerance<1%Beats:0、2、3、4、6TIPS-Use a tool into the groove on the bottom 、 then open it-Open the bottom cover; you will see a piece of foam which used to protect the pendulum、 please remove the foam before you use the metronome-Close the bottom cover、 please follow the instructions shown in the manualPackage included:1 x Metronome1 x Wiping cloth1 x Operation instruction