Does this device plug-in, or run on batteries?
1724462
It is electric!! I have severe arthritis....Applications of this light gives me relief!! I highly recommend it....The larger model was used on me in therapy....
1572897
It has to be plugged in to work. No batteries, but has an on/off button. I have it sitting on top of some files in the lower part of my desk as it doesn't really radiate a lot of heat unless it's close to you. I like it though.
1001142
No, you plug it in - Regular 110/120VNo place for batteries - supposed to draw minimal power (equivalent to 30W light bulb??). Unit works great!
117815
No, it does not run on batteries. Plus the sound is so quiet you can not hear it, when you have music or a movie playing.
1777271
It's plug in. But weaker than the two battery operated ones I've owned. And the cord is constantly in the way.
402549
No It does no run on batteries , Has to have 110 outlet, but works great. I wish it was a little more heavy duty (Its shell is Plastic)Hope this helps.
369774
It does not run on batteries it gets it's power from the docking station that it is plugged in to.
634046
Sorry the purchase was a donation. I am unsure if it runs on batteries as well.
1842070
Only works when plugged in. There is a battery backup to keep the time during a power failure.
2024458
Yes it uses batteries or you can plug it in (if you get all that come with it.) see the other reviews. I was apparently lucky to get both lol
841543
it has to be plugged into an electrical outlet.. it does not work with batteries .. mine is mounted in front of an outlet and you can not see the cord
2044011
It is USB and battery powered. It plugs into your USB port but the base of the unit (where the "on" switch is), has two AA batteries.
1819489
No, it plugs in. When I first saw it, I assumed it was battery-powered (and weak), or even manual. But it plugs into a standard outlet, and is plenty powerful.
1126340
Does not operate on batteries. Needs to plug to wall outlet or power through the USB cable into the computer.
1166885
You can plug it in and/or use batteries. Battery life is quick with much use, so we keep ours plugged in.
921630
The device is battery operated. It turns on/off any normal light house switch. Power does not pass through the device.
1847094
I really don't know. I don't plug the unit in, unless I have a handful of batteries to recharge. Then the light goes on, and I figure the batteries are all recharged when the light goes off. (Trial and error?)