Glances can be found by swiping up from the bottom of the watch face when the time is displayed. (canadianbusiness.com)
For example, new red and infrared light sensors on the bottom of the watch will let Ionic calculate relative blood oxygen levels of people wearing it, eventually opening the door tracking their sleep apnea, a dangerous condition that affects some 22 million Americans. (fortune.com)
In the strapless monitors which are prevalent in the sports and fitness industry nowadays, the watch comes with sensors fitted in it, one at the top and another one at the bottom of the watch. (aimworkout.com)