Product name:Electronic metronome Product size about : Overall length: 24.5cm/9.6in Dial size: 4.3*3.7cm/1.6 Charging method: magnetic charging Beat speed: 40-240 bpm Product color: As shown in the figure Product material:ABS product features: 1.Sports Watch Appearance Design:This watch has a stylish sports aesthetic and is equipped with Rhythm Response Technology, which enhances your body's responsiveness and makes it easier for you to develop a consistent rhythmic habit. 2.Vibration Silent Design: The metronome produces very little sound during the vibration process, which ensures that you won't disturb the people around you and is perfect for a variety of environments. 3. music and exercise mode: this multifunctional watch can be used not only as a music rhythm practice tool, but also as a fitness companion, perfect for running, jumping rope and exercise and other activities, in double-click button, you can switch modes, in the music mode can support the number of meter and tempo adjustments as well as the rhythmic type of beat tempo: 40-240 bpm. in the exercise mode support tempo adjustments, this simple operation can be applied to different age groups of children, and can be applied to different age groups of children, and can be applied to different age groups of children. This simple operation can be applied to people in different age groups. 4. Waterproof + long battery life: the product is waterproof, and the automatic screen off and sleep function in low power consumption can extend the battery life to more than 5 hours of active use and more than a month of standby time, ensuring that you keep the power longer during the activity. 5. Most suitable as a Christmas gift: this metronome is made of ABS plastic as a whole, the dial is made of aluminum alloy with a removable silicone strap, which is the most suitable Christmas gift for musicians. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 pc Electronic metronome