Description The design of this portable piano finger exerciser is small and exquisite and easy to operate. It can improve the speeds, strength and coordination of the fingers. It is suitable for auxiliary exercise of piano instrument performance. Its appearance design is adorable, charming and simple, which is very suitable for your finger correction. Features -Color: Black -Material: ABS, silicone -Size: About 12.50X10.50X6.00cm/4.91X4.13X2.36in -The design accords with the ergonomic design, so that you can practice the correct way of playing the instrument while exercising your fingers. -Practice without equipment anytime, anywhere, can improve finger speeds, strength and coordination. -Help correct the wrong hand playing posture and develop good habits for beginners. -The perfect tool for beginners to practice playing the piano. It simulates the piano key width 1:1. -Lightweight and easy to carry. You can practice anytime, anywhere. Suitable for piano beginner. The design accords with the ergonomic design, so that you can practice the correct way of playing the instrument while exercising your fingers. Practice without equipment anytime, anywhere, can improve finger speeds, strength and coordination. Help correct the wrong hand playing posture and develop good habits for beginners. The perfect tool for beginners to practice playing the piano. It simulates the piano key width 1:1. Lightweight and easy to carry. You can practice anytime, anywhere. Suitable for piano beginner.