Except for the highlight color, this looks the same as the HC-4250 I purchased from Amazon back in June 2017. I love the design of this, but I hope it doesn’t share a problem that seems to frequently happen; the battery life becomes quite short after a few recharges.
This version 4240 can not be used with the power cord plugged in. Therefore once the battery is dead you can’t use it. The 4250 version can be used corded.