Features: Multifunctional ring counter can help users conveniently count and record various activities. OLED display shows time, allows you to see clearly of the number of chants and prayer times. An integrated button, you can easily keeping track if your daily Tasbeeh count at all times, clicking the button to count, it will vibrate when the count reach to 33, 66, 99 or 100. Equipped with large capacity battery, long battery life, no need to charge frequently. Lightweight and available in multiple colors, making it comfortable to wear, stylish and youthful, a great gift for your Musilim friend. Specifications: Material: Plastic Size: 18mm, 20mm, 22mm(optional) Color: refer to picture to selection please Diameter: about 18mm/0.71", 20mm/0.79", 22mm/0.87" Charging: 5V1A Package Includes: 1x Multifunctional Tally Counter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.