Instead of one needle penetrating your skin you can have as many as 10 at one time penetrating your skin.... for larger colored parts. It all depends on a persons pain tolerance. You have some bones at your wrist.... that part will hurt more... but again, it is up to your pain tolerance.
I heard the bonier the spot, the more it hurts. Also something to think about, depending on what you career you want, some employers don't want any visible tattoos. I am not making a judgment either way, I am just letting you know before you get one. Some of the more professional careers really frown on tattoos.
The incredible pain of having a needle injected into your body multiple times, the pain of not getting a job, and the pain of being made fun of when your old because you have a wrinkly blob of ink on you, and the pain of losing money when you come to your senses and get your tattoo removed.