Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: What size battery does it take?
Document: Works fine but wouldn't buy it again. Fairly small in size so doesn't take up much space but also a pain to weigh larger animals using this unit.
It doesn't tare correctly, the battery springs are flimsy, and it measured in grams no matter which setting (oz or gm) I had it on.
This came with the battery which was nice. It weighs well and is big enough for the bigger things needed to be weighed. Only problem is the battery is hard to find for replacement compared to regular batteries and the plastic bowl cracked easily.
The battery runs out fairly fast if you are using it daily, day after day, but that is to be expected I suppose. Easy to read display and the bowl works fine in the dishwasher too. Doesn't slip on or scratch up counter tops either.
crap!!! showed low battery and numbers were half readable it made me buy new new batteries still didn't work. i went and bought $6 scale from target..works like charm, way better than this crap!
This scale has aided in my weight loss. It's sensitive, and functions well. One battery lasts a long time. The plastic bowl that comes with it did crack down the side, but I believe that was user error on my ex-boyfriend's part, as I haven't had trouble with it before or since it crack.
I opt for ounces. If you don't want to use the bowl that's provided you can place another measuring object on it and zero it before weighing your food. Easy to read. I am still very satisfied with my purchase. I will update again in a few months regarding battery life and how well it continues to hold up.
I love the scale. I've wanted one for a while now and I am very happy with my purchase.It is accurate, doesn't waiver and is a generally good kitchen scale. I have been using it for about 2 months now and it hasn't had any problems or died yet (meaning it must have relatively good battery power conservation since I use it a lot).Good product, good price!
Product came out of the box and worked for just a a few times. Thought it was the cheap batteries that came along with the unit. Changed the batteries for new ones and it worked for a few measurement. Then it started to act up again. Kept alerting to low battery but I checked the volts of the battery was good. In all it was a bad purchase. First one I had since ordering from Amazon. Highly do not recommend this scale.
this item doesn't even deserve that. The scale had obviously been returned in the past and the battery compartment was corroded. Unfortunately, due to events beyond my control, I wasn't able to return it timely (missed the return deadline by 1 day). I accept full responsibility for that and my rating has nothing to do w/the return deadline. I wouldn't order this scale again nor would I recommend it to a friend.
Answer: It takes 4 AA's, which it comes with.