Product name:Electronic Finger Counte Product size about :3.5*3.5cm/1.38*1.38in Battery capacity: 50mah Product color: As shown in the figure Product material:ABS product features: 1. Small counter: Because it is small and exquisite, it can be easily worn on the finger and count anytime and anywhere, which is very convenient. It can easily help you calculate and record the number of various things, such as the number of steps in exercise, the amount of food, and even the scores of exams. 2. Outstanding waterproof function: The counter has a high waterproof performance, which can avoid the counter from failing due to water intrusion, so that you can use it with more peace of mind. 3. The LCD backlight is visible at night: The LCD display backlight of the counter is brighter and can be clearly seen at night, allowing you to use it easily under different light conditions. 4. Magnetic charging: When charging, just put the counter close to the charging base, which is very convenient and also avoids the wear and tear of the traditional charging port. 5. 20-day battery life: A full charge can be used for up to 20 days, saving you time and effort without frequent charging. 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 Finger Counte