system
Given the following post, respond as if you're commenting on Reddit:
human
If you were to walk on mars wearing normal clothing (temperature appropriate) and a breathing device, could you survive for any length of time?

I realize the pressure would be the biggest problem. Would it be possible to go into an airlock or something and lower it slowly until you could walk outside?

If not, lets say hypothetically the pressure is not a problem, would the different atmosphere cause any problems even though you're breathing normal air?
gpt
If you're wearing a breathing device that delivers compressed air to you, the pressure is not immediately a problem.  You'd want to decompress slowly to avoid decompression illness.  Your skin would start drying out pretty quickly, though you could probably mitigate that temporarily by smearing your skin with vaseline.  You'd want a full-face mask to keep your eyes wet and working right.

So yes, you could survive for some amount of time.

But let's talk about this "temperature appropriate clothing" thing.  Mean Martian surface temperature is -63 C.  So you'd need some really good temperature protection... why not just wear a space suit?