Pebble

Grey and black solid smart watch has digital displayFeatures:Spo2 Monitoring throughout the dayAspire has a built-in spo2 detection system that monitors your blood oxygen saturation 24/7 If it falls too low the band will vibrate, so you can take time to breathe and regain your balance All Day Heart Rate Monitoring: Pebble Aspire's heart rate monitoring technology uses an optical lens and data-based data processing to accurately monitor your heart rate 24 hours a dayBe instantly alerted when your heart rate drops below or rises above safe levels1.57 Full View Screen: Pebble Aspire has a 1.57-inch HD full view screen, the size of the display area is 1.48 times larger, and a low-frame 64% screen-to-body ratioCombine that with the high-resolution 240x360 display at 282 ppi and you have something really impressive to look at on your wrist2 Week Battery Life: The endurance athlete in the wearables world, Pebble Aspire offers an incredible battery life of 14 days for typical use, and 10 days for heavy onesNote : This product is not a medical device, and is not intended to diagnose, treat, cure or prevent any disease