Instruction: Answer the given question using the supporting document.

Input:
Question: Is this device compatible with the Jabra 6470 Headset and base?
Document: It also has a headset jack that you can use to plug in ordinary headphones if you want to listen privately.The unit is a black circle that is about 4 inches in diameter and about an inch thick. It includes a non-detachable USB cable that wraps around the device and tucks into a crevice between the base of the device and a speaker. The speaker is enormous (compared to similar devices) and as a result the sound quality is excellent.
The Jabra SPEAK 510 is a pretty amazing little piece of technology. It looks nice and has great features. The Jabra is plug and play and the Bluetooth hooked up with no problem. The Jabra is great for increasing the volume beyond the maximum for your device and sounds fantastic. The LED lights on it show such things as volume. The USB cord can be wrapped around the base and it has a neoprene carrying case. The diameter is about the same as a cd.
Still, I am very pleased with this Jabra plug and play product. Its compatible with all of my electronic gear. I like the portability too. The folks at Jabra got this one right.
Out of the box you've got the speaker phone itself, a pouch, and some documentation. There isn't a whole lot included, although not much is needed here. The USB cable is permanently attached to the device, but there is a nice place for it to wrap around the base for portability.
OK, dumb title for a review, but as I started writing this, I was listening to "I've Got the World on a String," by Frank Sinatra. It's a rousing, feel-good song, and it was the first song I started playing when I wanted to test the Jabra Speak 510 as a Bluetooth speaker for my MacBook Pro.Let's start from the beginning, though. The speaker comes with a USB cable wrapped conveniently around its base.
I wanted to stop wearing a headset eight hours a day and had a terrific experience with my Jabra Bluetooth headset. By purchasing this speakerphone, I get great quality sound for both my conference calls and my music, and those on the call with me say they can hear me loudly and clearly. Great solution! no more cauliflower ear from being wrapped up in a headset all day.
There's no multi-function button to engage S-Voice or provide voice commands. In fact, I can't even dial out using the Jabra. In order to activate the speakerphone, I either have to wake for an incoming call or dial out using the phone and switch to headset mode on the phone (or push the Green CALL button).
For me, its always been hit and miss with Jabra products. To be quite honest its been mostly miss. When given the opportunity to test drive the Jabra Speak 510 I had some serious reservations. After four weeks use, these are my thoughts.The Jabra Speak 510 Speakerphone comes packaged with a nicely padded travel pouch and instruction booklet. This unit charges via the onboard USB cable. The USB cable is hardwired and easily stores in the wrap around base.
First, plug the Jabra Speak 510 into any available USB port on your PC. Put the Bluetooth headset into pairing mode. Press and hold (8 secs) the Bluetooth button on the Jabra Speak 510 until the Bluetooth light flashes blue and then flashes green. Release the button when you hear `Connect to headset'. The connection is established when the light turns solid blue. All audio on the PC will transfer to the Bluetooth headset.
First, a little about the device, the size is 4 3/4" diameter and  a little less than 1 1/2" high. It comes with a 30" USB cord that coils around the base. The base of the unit has a ring of non-slip material. All of the controls are on top, and they are touch activated - some of the buttons you have to hold for a second or so for them to activate, others work instantly.
Answer: It has a jack for headphones.  I have not used it as we bought it for group conference calls.