1、Inform you with sound and indicator when call, sms, social messages arrive. RTC (12/24 hours). OTA upgrade. 2、24h dynamic real-time accurate heart rate monitor and alarm.(According to the wearer height, weight, age, gender and other information to calculate the health of heart rate segment.) 3、Physical condition monitoring (The first time you wear the watch, you need to complete the human body modeling). Sports monitoring and fitness advice. 4、Allergic drinking monitoring--If alcohol is detected or the heart rate is suddenly high, it will alarm(Only for people who is alcoholic allergy to alcohol). 5、Track your sleep quality and wake you up gently by smart alarm. No noise wake up--to avoid adverse irritation to the heart by the sudden alarm and do not wake your family. Features: Inform you with sound and indicator when call, sms, social messages arrive. RTC (12/24 hours). OTA upgrade. 24h dynamic real-time accurate heart rate monitor and alarm.(According to the wearer height, weight, age, gender and other information to calculate the health of heart rate segment.) Physical condition monitoring (The first time you wear the watch, you need to complete the human body modeling). Sports monitoring and fitness advice. Allergic drinking monitoring--If alcohol is detected or the heart rate is suddenly high, it will alarm(Only for people who is alcoholic allergy to alcohol). Track your sleep quality and wake you up gently by smart alarm. No noise wake up--to avoid adverse irritation to the heart by the sudden alarm and do not wake your family. Specification: Color: Black, Silver, Gold (Optional) Main Chip: Nordic nRF51822 Heart Rate Sensor: Real-time monitoring of heart rate Acceleration Sensors: Triaxial MEMS Acceleration Control Mode: Entity button, raising-hand display Vibration: Real-time vibration reminder (non-Bluetooth connection status) Screen Size: 0.95 inches Screen Type: OLED Memory: 32KB RAM + 256KB ROM Product Size: 245 x 41 x 8.9mm Data Connection: Low consumption Bluetooth 4.0 sync Compatible Systems: Android 4.3 and above; iOS 8.0 and above Waterproof and Dustproof: IPX8 Data Storage: Local and cloud servers Battery Type: Polymer lithium battery Battery Capacity: 100mAh Life Time: 3 to 5 days or more Charging Method: Contact charge Charging Time: About 1 to 2 hours Main Shell Material: Alloy CNC, tempered glass Strap Material: The first layer of leather APP Language: Support Chinese, English Package Weight: 130g Quantity: 1pc Package included: 1 x Smart Wristband Watch 1 x Charging Cable 1 x User Manual