Feature: 1. BT5.1 CONNECTION: Compatible with BT5.1, quickly connect to the for iQibla APP, accurately obtain directions, synchronize data with phone, receive 5 prayer time reminders. 2. COUNTING FUNCTION: Using integrated CNC buttons, daily counts can be tracked at any time. Click the button and it will vibrate when the count reaches 33, 66, 99, or 100. 3. BUILT IN BATTERY: This Bluetooth ring is equipped with 40mAh high capacity battery that can be used normally for 3 days and charged through a USB data cable. 4. CLEAR DISPLAY: This smart ring features a 0.49 inch organic light emitting diode screen with 72 x 40 resolution, displaying time, chanting and prayer frequency. 5. VIBRATION MOTOR: This smart ring uses vibration motor sensor, lightweight and compact, and comfortable to wear, making it suitable for daily or gift giving use. Specification: Item Type: Smart Ring Material: Aluminum Alloy Color: Graphite Product Size: Approx. 20mm / 0.8in Battery Type: Built in 40mAh lithium ion battery Matching System: For Android 5.1 Screen: Organic Light Emitting Diode, 0.49 inch, 72 x 40 Charging Port: For Pogo Pin Sensor: Vibration Motor. Package List: 1 x Smart Ring1 x User Manual1 x Charging Cable1 x Charging Storage Box