KEEP TRACK OF BOTH YOUR TEMPO AND RHYTHM WITH THE CANTUS METRONOME! Features PLAY YOUR FAVORITE PIECES WITH EASE!Help you develop rhythm, maintain tempo, play accurately and increase your musical awareness. APPLICABLE FOR MOST MUSIC INSTRUMENTSProduce rhythms at a proper pace when practicing piano, violin, guitar, bass, drum and other musical instruments. INCREDIBLE FEATURESAudible click & bell ring to maintain the rhythm while reading music sheet; Wind up mechanism produce metrical beats, no battery required; Tempo range: 40-208 bpm; Beat selection:0,2,3,4,6. EASY TO USE EVEN FOR CHILDREN & BEGINNERSTake out the brake, pull off the cover, adjust the beat and tempo, and then you are ready to use; An average single full wind (2160 clicks) lasts at least 18 minutes depending on the tempo; We stand behind our products 100% with awesome customer support! Email us if you have any questions. Specifications Material: plastic & metal mechanism Tempo range: 40~208 bpm Beat: 0,2,3,4,6 Power: winding mechanism Dimension: 201*95*110mm Weight: 650g Tolerance less than 1% Package *mechanical metronome *user manual *After-sale service card NOTE: Avoid using the metronome in a dusty or damp place; Avoid any drop or attack on the metronome; Always put on the plastic cover after use; Only use soft cloth to clean the metronome.