Along_the_Wire
Hi mate, its about 2-4 hours depending on your recording quality settings and format of the SD card.
Mine seems to split into 2gb files but you just join them together with Audacity.
When recording WAV make sure you press Stop recording otherwise you lose the file if someone pulls the plug / batteries die.
This may be the same for the Zoom due to the way WAVs have to be sealed/contained for a few seconds after stopping.
I have Tascam DR-40 and like it but some of the Zoom products are better (they have outputs for monitors so your recorder can sit inside the chain - handy when all the mixer output ports are taken!)
I recommend recording in WAV as when uploading to soundcloud etc they compress it a little. If you record in 320k mp3 you are already ālossyā and people have commented before that they can hear when an MP3 was uploaded after SC compresses it again.