OXITECH's health management device features a self-check function. - Brand: OXITECH - Model Name: Health Management Device - Included: Instruction manual, strap, compass - Functions: Blood oxygen saturation, pulse rate, stopwatch Thank you for viewing. Measures blood oxygen saturation and pulse. Although it's an outdoor product, it can of course be used at home. A small compass is attached. The box is a bit old, but the contents are new and unused.