Checkme O2 Wrist Oxygen Monitor

Selling a Checkme O2 72-Hour Wrist Oxygen Monitor! It helps continuously track oxygen levels and pulse rates for 7 full nights. The patented ring sensor doesn't get in the way of your finger movement at night, and it stays put. It also features a smart gentle alert when oxygen levels drop below the preset threshold. The unit can store 4 sessions of data (up to 10 hours each) and print & share free 2s interval oximetry reports.