The one I wear is a Dexcom. It has a patch with a Bluetooth transmitter that sends updates every 5 minutes to my phone. No calibration needed. Have to replace the patch every 10 days.
Much better than jabbing myself.
sloarb,
Throughout each 10-day period, how often do you calibrate using a standard glucose meter and fingerstick, as described in the Dexcom users guide?
How much?
Where did you buy it?