Screen : OLED64*32 Pairing System: iPhone 4S /5/5C /5S IOS6.1+ version,android 4.3 and above BT4.0 version. RAM/ROM: 64KB RAM?64KB ROM Bluetooth: V4.0 Sensor : G-Sensor Function : Step counts, distance measuring, calorie consumption management, sleep management, event trigger (water drinking, taking medicine, meeting ect.), call reminder, message reminder, clock, sedentary reminder, anti-lost, vibration alarm clock. Battery : 60mAh Package included: 1 x Smart bracelet 1 x User Manual 1 x USB Cable Features: -BT Connection-BT 4.0-Display Healthy Pedometer--steps, distance, date and time.-Sleep Mode--Track your sleep quality.-Calories Tracker--Helping your arrange your sport schedule.-Synchronize Sport Data to Phone--Analyzing sport data on your phone.-Adjustable Wristband--Finding the most comfortable size to wear it.-Remind Feature--coming call, SMS message.-Alarm Clock--You can set up to alarm clock .-Remote Control--Remote player&camera, convenient to your sport life.-Sleep Monitoring--With the function, you may know whether your sleep quality is good or not.-Anti-lost--Protect your phone.