power source? only batteries?
358114
it has battery backup in case the power goes out, but it does plugs in to a wall outlet' I love this clock because I can set 2 separate alarms for weekdays and weekends!!
358115
The clock has a Power Cord, it has a battery installed in it, just for in case you lose power in your home, but I would say that 95% of the time, it runs off of the Power cord.
358116
Plugs into standard 110 outlet. It also has a built in lithium battery so your alarm goes off when there is a power outage.
1704629
Require a power supply: No; Batteries: My book says "to provide back up power". Others have mentioned that the batteries don't last to long
650346
It does not take batteries, only AC power. I think portable refers the tiny size of it.
200388
There are no batteries involved with this product. Unless of course you wanted lights on it, then you would have to provide a power source such as batteries.
499477
No, but the batteries do last a long time. If you find someone savvy with electronics I'm sure they can wire up a power supply. It would need a transformer to reduce the voltage
1462473
You would use the battery power if there were no electrical outlets such as in the backyard. It comes with a charger so you just plug it in the outlet.
1813273
From what I have experienced, there is not "battery" on this product. So it has to be plugged to a power source.
2146919
The only power source I found on the one I bought (and subsequently returned) was AA batteries. I could never get mine to work, so it went back to the provider.
100396
No batteries are needed. It gets what little power it needs from the USB port
60064
I have disposable AAA batteries in mine, I'm sure you could find some rechargeable batteries online if you wanted to though
1911476
Buy a dc adapter and it will work without batteries. Or buy rechargeable betteries.
1398769
This device is not contain a battery. So you will need a fixed power source.
1296885
Not battery powered. Has a transformer that plugs into 120VAC. The transformer output is low voltage AC.
2096646
Battery powered. Not sure about the back lit part since I bought it as a gift
492970
It does not take batteries. You need to find a power source that connects via usb cable. Look up usb power source
1391875
you don't need a power source, the display goes when you cycle. comes with a battery.
619047
The power source is a little circular 3V internal battery. It is included with the device. There is also a light receiver on the face of the device that I assume contributes to managing battery power.