Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Some answers say there's a flow restrictor -- which is it?  And is it removable?  Thanks.
Document: This showerhead provides such a powerful flow that I don't need to have the faucet fully on. Easy to adjust. Nothing more to say but Amazon's rules say I have to use more words.
Just got this yesterday. After two showers I can report the water flow is wide and strong (of course I took off the limiter which does take some effort). I will say there are really only two modes; full spray and massage(which is nice and strong). I'm happy :)
Ive had a few shower heads over the years but after hooking this puppy up Iv'e got to say im really impressed. The quality of this item is amazing. This one works right out of the box no tweaking necessary. The water flow is great and it feels just like a shower from the upper end hotels.Most of the showerheads I have owned change the various stream sizes from the front and would lock up eventually due to poor design.
I needed a shower head to replace the tiny one my land lord had installed that was leaking and spraying in all the wrong directions and wasn't spraying enough to wash my hair. I bought this one based on reviews, replaced it myself just using a wrench and it's perfect. The spray is strong and there's different spray options. Such a simple fix and makes the shower actually useful. I didn't even have to remove the low flow piece because it was strong enough.
That's more about the net gains and I don't get overly worked up about shower heads.Regarding the removal of the flow restriction...I didn't feel it really needed it, but since others claimed it offered so much more and with a well I know it will get clogged over time I went ahead with it. There's many other descriptions of this, but I wasn't able to easily separate the shower body to gain direct access (need a 1" or larger wrench and easy to damage since plastic).
I didnt even have to take out the flow restrictor for this to provide great water pressure and improve my life
Works great. Tried to remove the flow restrictor, but could not. Also wish they had a on and off button so as not to waste water when you do not need it.
Well worth the money, If you follow the instruction to take out the flow restrictor, you will have one heck of a forceful rain shower
I too removed the flow restrictor. Good pressure, adjustments  and volume. I will be buying another for my guest bath
With water restrictor (O ring) removed excellent pressure & flow. Highly recommend. This shower Head replaced a $100 plus Moen showerhead.
Answer: yes