Instruction: Answer the given question using the supporting document.

Input:
Question: Are there any safety features? For example if the lid isn't on tight will it still work if you hit the button?
Document: It has some safety features built in so no one gets their hand chopped up by the lethal-looking blades that go up the center. I understand the need, but it was still annoying to deal with. The lid has to be placed on just right to line up with a little sensor. The handle must be pushed down, and the 'release' button on top must be popped up or the blender will not run.
I wanted a reasonable priced blender to make healthy smoothies and so far this fits the bill. I have had no problem. Blends well, easy to clean, safety features include a lid that you must lock in before using. Not easy for a child to figure out. I got great price, $95.00 no tax, no shipping so if last me 2 years I will be happy.AS it turns out, my model is BL600, odd because this model came up for me to review.
This blender was listed in Consumer Reports as one of the top blenders and I can see why; Lots of motor, many blades and several safety features I cant find on the Vitamix at 25% of the price of a Vitamix.I have made 20-30 smoothies which is all I use a blender for and they are smooth and the ice gets broken up evenly with not abnormal chunks.
You get the idea: THIS THING MAKES MULCHY CHUNKS INSTEAD OF BLENDING TO A THIN CONSISTENCY and it just doesn't make for an appealing smoothie.The other thing about the NINJA: It comes with all these parts that click into place, need to be aligned, suction cups on the bottom to hold the thing in place, a "release" button on top of the lid, tons of little parts in the box, etc.
My daughter sent me the Ninja 1100 System as a gift. I have been using it for around 3 weeks. It has worked perfectly. I was very happy with the product until I went to use it  today to make my morning smoothie. I placed a cup of ice into the bowl plugged it in and pushed the power button. The power button gave me a solid light meaning it was ready to operate. When I pushed the crush button the light came on solid green but the Ninja did not work.
The blades are no-longer untouchable, but still sharp and blends like a champ. The motor and bearings work like new, not a hint of being loser or weaker than day one.
It's a bit of a hassle if you're blending something that requires repeated scraping of the sides, and almost everything I tried needed that... multiple times during the blending. The lid got a bit old.I did rather like how the whole blade part came out for cleaning, though it can fall out as you're rinsing the jar initially so just be careful, that thing is crazeballs.All in all, it wouldn't work for us since we primarily make green smoothies.
I am so disappointed with this product. I previously had a cheapy Walmart blender that worked great, but I broke the glass pitcher, I received my Ninja and tried to make salsa, and I can't get it to work well at all. Twice now after a substantial amount of time blending, I am still getting large chunks of jalepeno in the salsa (like 2/3 of a jalepeno). I have had more success with smoothies, but I am still not getting the amount of blending I had previously.
I know I should not buy things from an infomercial...I know better. But I ripped the blade off my cuisinart food processor and saw the commercial for this one and decided to go against my better judgment. Bad idea. Why is this thing square?? whatever you are blending just gets stuck in the corners. Really irritating. Why do the larger and smaller pitchers need different lids?? They are nearly identical openings and it is just aggravating that the lid I find first does not always work.
item as described ,lock stand features are great while working in a busy  works great and love using all attatchments
Answer: Only works if the lid is SNAPPED on with a locking button/pin, the motor will not engage unless the lid is perfect