Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: what kind of batteries does the keyboard and mouse use? and how long do they last?
Document: Not so great.. keyboard is kind of &#34;sticky&#34; and the mouse is very weird shaped. Also, the batteries that came with the mouse have already leaked inside of the battery compartment. Would not purchase another one!
Just what I wanted out of my purchase. The price isn't bad, the range is long (about 8- 10 ish feet), comes with batteries( though i would have preferred something included to charge it with, but i'm not complaining. ), feels like a good quality keyboard and mouse (not cheap),  the shortcuts are a plus on the keyboard, and the overall look is exactly as what was seen in the picture. Oh, and it arrived on time. :D yay~ ;)
A good, inexpensive wireless mouse & keyboard. I use this to select content and play games from across my room.Pros: The buttons (play/pause, next, volume + - etc) are convenient. Mouse is very responsive. The red keys make it slightly easier to find WASD in the dark. The usb receiver is tiny.Cons: The buttons on the left side of the mouse are annoying and take a long time to get used to (I almost deducted a star for this).
The mouse was finicky and didn't work for me, its like the the battery slot is too big for the AAA batteries it came with. I ended up using a different mouse. On the other hand the keyboard works great and is easy to use once you get used to where the Return key is at.
Hey everyone. If you're looking for a keyboard to use from a far distance, this is the one for you, but if youre just getting it for the looks, DONT GET THIS KEYBOARD + MOUSE. It interferes with internet connection ( my internet connection is perfect, but when I try to use the keyboard it takes so long for videos to buffer) and can be very frustrating.
The keyboard for the computer that my boys use broke after 5+ years so my son found this on Amazon. I thought it was a great price for a keyboard and a mouse and my sons loves that it had all the cool gaming buttons. It's been working great for the three months so far. Haven't had to replace the batteries in the mouse yet either and it gets used quite a bit.
)* Interferes my with Belkin usb wireless adapter sometimes* kind of looks like something a 14 year old kid would own..over all i got to say while testing this product to write this quick 30 second reciew,i am impressed. I feared i would be getting much more disturbance with my signal but that has proved to be wrong.. This is a great 25$ keyboard.. even as a backup or a throw away. if it last 6 months i will be happy with it..
The mouse is fast and easy to hold. The keyboard nice and easy to type. I just got this today 12/30/13 and I love it, I hope this just keep being a great product for a long time.
Mouse is great for gaming and has a battery saving mode i still haven't changed batteries and im still able to go with out changing them. But the keyboard just doesnt sync up with the wireless adapter.
Batteries have lasted for 5 months before replacing in the mouse. Keyboard still going. It's a funky looking keyboard with the red keys -- for all those gamers I guess -- but it was a great price for a reliable keyboard. Have had no issues with it.
Answer: The keyboard uses a single AA-Battery, while the mouse uses two AAA-batteries. So far, the mouse has lasted about two to three months (I did not turn off the mouse, I left it in stand-by, which is good). As for the keyboard, I recently had to replace the battery, but I believe it was more on the battery's side that the keyboard didn't last long. I recommend that you use Duracell or Energizer batteries for your keyboard and mouse to play on the safe side.Also, the customer support for VIOTEK is very good. My keyboard broke and they replaced it without me having to pay for a new one, so should a problem arise, they can replace it if you have the proper information.