Bought for personal BP testing. Got this because it looked more fun that a digital one. Used for a week so far.
After watching some youtube videos I found it pretty easy to measure blood pressure. Don't know how accurate it is, but it gives similar results to the automatic sit-down tester at the grocery store. Stethoscope is fun to play with on it's own, listen through doors, can hear pipes in the walls, etc.
Note: As others mentioned you will not be able to make out Korotkoff sounds while holding the stethoscope because of the scratchy noise of you hand. I used a wristband to strap it to my wrist (not included).