A universal mechanical metronome suitable for most musical instruments, such as guitar, bass, piano, violin, drums, and more. The rhythm is accurate, with clear and loud sound to help improve your sense of beat and timing, ideal for beginners learning musical instruments. Easy to use: simply wind it up, select the desired tempo, and remove the cover to start the pendulum. Adjust the speed by sliding the weight up or down on the pendulum ing to the marked scale. Powered by environmentally friendly mechanical energy—no batteries or external power source required. The winding mechanism generates the necessary power. Features a classic pyramid design with a protective cover, durable construction, fine craftsmanship, and portability for safe and convenient use. Color: teak color Material: wood Package Contents: 1 x Mechanical Metronome Note: Other items not included. Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement allows an error of +/- 1-3 cm.