Large HD AMOLED Display The large 1.47 display can fit more important information and reduce the scrolling. It is 112% viewable area increase compare to the Band 5. The HD full colour AMOLED display with 282 PPI brings you a clear and gorgeous visual experience. 24H Blood oxygen Monitoring The Amazfit Band 7 advanced biosensor is able to automatically monitor your SpO2 level 24 hours a day. The band will also send a reminder if it detects your SpO2 level is too low while in a non sleep state. Alternatively, whenever you're engaged in intense mental or physical activity, or even just feeling uneasy during your day, initiate a manual SpO2 test for a result in as little as 15 seconds. Test 3 Health Metrics in 1 Tap. The Band 7 is able to quickly and conveniently measure three health indicators with one click heart rate, SpO2 stress as fast as 45 seconds. 120 Built in Sports Modes Large selection of 120 sports modes, providing useful exercise data such as distance, speed, heart rate, calories burned, etc. making your exercise more efficient. With automatic recognition of 4 sports, the users don't need to manually open the sports modes, and can jump right into action. 18 day Battery Life Say goodbye to daily recharge. When fully charged, the 232 mAh battery of the Amazfit Band 7 can last up to 18 days with a typical usage, and up to 12 days with a heavy use. Alexa Built in With the Alexa Voice Assistant built in for online voice commands, you can easily use Band 7 to ask Alexa questions, set alarms and timers, check the weather and more Amazfit Band 7 Smart Watch - Black Small Appliances 1 x Amazfit Watch 1 x User Manual 1 x Charger.