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

Input:
Question: How do I charge it when the battery dies?
Document: I only recorded 30 minutes total, and didn't run out of battery, so I don't know how long the battery would last on one charge. The one oddity, as another reviewer noted, is that on playback it seems to slow down the recording slightly, so it makes your voice a little deeper and slower.
The recorder is sold with different color cases (black and silver, white and blue, white and orange, white and green) but otherwise the cases are identical. The electronics inside are very different. Which one will be delivered to you? I don't know.Version #1 records 128 Kbps for about 10 hours on a battery charge, and the 4GB flash memory holds about 70 hours.
Here is my experience with this recorder. I have a non-commercial website where I have more detail. Google "USB audio recorder review".This audio recorder and USB thumb drive is simple, light weight, low cost and has very good audio quality. It weighs about 1/2 oz. The plastic construction is adequate but flimsy. This recorder can record audio for about 5-10 hours on one battery (LiPo) charge, and the flash memory holds about 47-70 hours.
Pros:- small and lightweight- very easy to hide- simple button layout- clear recordingCons:- cheap outer shell- hard to tell whether it's on or not- hard to tell when it needs charged- very short battery life (lasted about 2 hours on a full charge)
PROS:1. Low cost.2. Very clear recordings.3. Built in rechargable battery thrue USB port.4. Simple controls (ON and OFF).5. A single LED ready light for recording, charge, and low battery.6. Records for up to 35 hours (but battery "only" lasts 13 hours).7. Very small (it's a USB stick).8. Records each voice message consecutively.CONS:1.
I use these things for work; the three I own have worked flawlessly for several months now. Quick to charge and very easy to use (both to operate and download later). Great tool to have when carrying a larger recorder just won't work.
This little &#34;thumb drive&#34; recorder worked just great the first time. Then I noticed it wasn't holding a charge. Then it would not charge at all. Now my computer won't even recognize it. Just to be sure, I have been using other USB devices with no problems in the same sockets.
Easy to use. I don't think the battery ever died. I use the recorder on property inspections. I can keep it on my key chain. Great for keeping detail notes when writing a report. I just play the recording while writing and i haven't missed the smallest of details including exact location of issues.
I love this usb digital recorder because it really comes in handy since I am a college student I can record my professor's lessons and write down any notes that I missed and store any homework documents on it as well. I recommend this for anyone in school or if your a forgetful person and need a reminder. Also, it lasts pretty long before you have to charge it.
I love this audio recorder! It's small, portable, and clear. I found that if you flip the recorder to the other side (where the small little hole is)  while recording it gives you a much clearer audio. over all for the price it's great and the battery lasted very long before recharging it. I used it for days and many lectures before recharging it. You can also use it as a USB and insert ur other info as long as you make a separate folder.
Answer: You plug it into the USB port on your computer. The light glows on and off until it is recharged.