Its a very good MP3 sound recorder.
Pros:
1. Very long battery life.
2. Rechargable battery.
3. Small size, easily fits inside pocket.
4. Catches sounds from long distance.
5. Records as MP3, no need to convert for PC or Phone use later.
6. Comes with speakers so recorded sound can be heard from the device.
7. Screen light.
8. Rugged and heavy metal, If anyhting slighly too heavy.
9. Clean recordings with no hiss.
10. Stereo mics
Cons:
1. Locked up once when recording and none of the buttone worked. Was easily fixed by holding the power button down for 10-15 seconds and it rebooted.
2. Backlight is not 100% even on the screen and could be a little brighter
I have been using it inside class and everything sounds perfect!