Features: brand new and high quality Adopting high quality pure copper clock mechanism，offer you a precision rhythm. Adopting pyramid shape and rigorous design style,beautiful and practical. Help us to for play music with more smooth and steady rhythm. Help us to for focus on, improve the practice efficiency. Help children develop speed concept. Precision spring mechanism.
note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!