Detecting without headphones is like bathing without soap, kinda pointless. Get a good set and use them. Now, if you like annoying everybody within 200 yds. of you, constantly having kids around you and missing some good targets for me to find, then by all means, don't use them. You will also get better battery life with 'phones as it takes less power to drive them than the speaker. Just make sure you get some with a volume control on them or the 250 will blow your ears off!! Any serious detectorist uses good quality 'phones and never hunts without them.