Huawei's latest wearable comes equipped with an optical heart rate sensor as well as a SpO2 sensor for gauging blood oxygen saturation levels. The Huawei Band 10 sports a 1.47-inch AMOLED display ...

(Photo by LAKPA SHERPA/AFP via Getty Images) Let's put it into perspective. The summit of Africa’s Mt. Kilimanjaro, at 19,340 feet, is fairly easily reached without oxygen. But persons on top of ...