Rohm

The battery genuinely lasts through two overnight trips without a charge, which I didn't expect. I leave it running on the nightstand in strange hotel rooms and the traffic noise just disappears. The lanyard is handy for hanging it off a hook too.

I clip this to my backpack strap on every flight and it runs the whole trip without dying. The noise masking is surprisingly natural, not that harsh static hiss I've gotten from other machines.

The lanyard is a game-changer for me—I clip it to my bag on flights and actually fall asleep before takeoff now. Battery held up through a 14-hour travel day with plenty of charge left, and the masking hum is just enough to drown out cabin noise without being distracting.