I'm looking for a device that measures and records blood pressure, heart rate and oxygen in programmed intervals. The data must be stored locally on the device so it can be transferred to my PC by either USB or bluetooth later on for further analysis. I've seen devices that measure heart rate + blood pressure or heart rate + oxygen (finger oximeter) but none that does all three things. I must be able to wear it during exercise and it has to be comfortable enough to keep it on during the night. Any recommendations? I'm planning to wear it 24/7.