I own this chess computer.
It is a really good chess computer/clock. To customize it further than the stock settings, you do need to know
Linux/command line prompt, and you can easily update versions and get it to continue to announce moves even under one minute time controls.
For those who want a simple, non-technical computer, the Centaur Chess computer offers powerful play with ease of operation.
I would have that one if I didn't have the DGT Electronic board and DGT PI. who knows, I may still get a Centaur Chess computer.
But the DGT PI has outperformed my expectations, in play and features. I did have to put my tech hat on to get at all the "extras' under the hood.Which meant modifying files and things like that. I don't recommend for the un-initiated.
You can power it with the AC adapter it comes with, or with a power bank. Attach a speak to hear it call out the moves.
It can be adjusted to update, announce down to the second, retrieve saved games, email you your games, do Ethernet connections,
it can do wifi with a wifi dongle, you can set customized time controls, and other things. Granted you do need to know some programming to get at some of this extra stuff. I even install endgame tables on it.
Even so, I do recommend this machine, especially if you like to tinker.
For most people, the stock settings will suffice.
I really I can play with a tournament size board and pieces, when paired with a DGT electronic board!! THAT was one of the biggest selling points for me.