Random Color Finger Counter Mini Button Plastic Shell Product Name: Finger Counter (Random Color) Product Size Approximately: 2.7 * 3.5 cm / 1.06 * 1.37 in Product Color: As shown in the picture Battery: RC2032 (260 mAh) Product Material: ABS Product Features: 1. The finger calculator is small and lightweight, easy to carry and store, and can be worn at any time. 2. The user interface of the finger calculator is simple, intuitive, and easy to use. You can use it to record your workouts; it has a wide range of uses you can imagine. 3. Equipped with a high-precision sensor. You can be sure that you can perform calculations with the finger ring calculator. 4. Battery operated. You can replace the battery at any time without worrying about running out of power. 5. Made of high-quality material, durable and reliable, you can count fingers with confidence. Equipped with a wrist strap, you can easily wear it on your thumb for operation and monitoring. Precautions: 1. As we all know, different computers display colors differently, so the color of the actual item may vary slightly from the images below. 2. If you have trouble choosing the size, feel free to contact me. We will make some suggestions, but this is for your reference only. Package includes: 1 piece finger counter (random color)