I have tried several of these Bluetooth clip-on or necklace style dongles (including the
Jabra BT3030,
Motorola SoundPilot S705,
Jabra Clipper, and
Bluetrek MusiCALL). All of them make your own headphones or earbuds Bluetooth capable. This works well for listening to podcasts or music while your phone rests comfortably on workout equipment, without the danger of it being pulled off by the headphone cable and go crashing to the floor, or when using your phone for other purposes, such as checking off items in rShopping List.
If your phone supports AVRCP (and many do), this device can play/pause, fast forward/rewind, and change the volume of your audio selection. However, as with all of those I have tried, you can only go forward and backward an entire track at a time. This has been true when connected to every Android Phone I have tried (G1, Nexus One, Samsung Galaxy S2). Pushing and holding is supposed to move a little bit within a track, but that never works.
Also, if your device supports HFP (most phones do), you can take calls while listening to music. There is a microphone port on the "top" side of the device, next to the headphone jack, for this purpose.
This HS3000 connects the quickest, usually only a couple of seconds, of all those I have tried. It has a dedicated slider for powering on and off, which really helps for the quick connect. The others I have tried require you to push and hold a power button for several seconds, which only increases the time it takes to connect to your phone.
This is the only dongle I have tried to feature voice prompts. It actually says things like "Ready to pair", "Power off", and "Device connected." The others just give you a sequence of beeps that you must remember what they mean. This makes the HS3000 exceptionally easy to use.
When used with a Bluetooth 3.0 capable device, the HS3000 has excellent range and resistance to interference from obstacles, such as my own body. Of those I have tried, this one comes in second, only being beaten by the Sound Pilot S705 -- which is a Bluetooth Class 1 device and is spec'd at 10 times the range (100 meters) of most devices, which are typically Class 2 (10 Meters). I can set my phone down in one room and reception is fine in nearby rooms.
Battery life, as with all of those I have tried, is good enough to listen to several (3 - 4) hours of continuous podcasts or music between charges, which take about 45 minutes.
*** And now for the bad bits
Probably the worst feature of this dongle are the tiny, incredibly similar buttons sprinkled along both sides of the device. It is almost impossible to tell by feel alone the small differences between the volume buttons and the play-related buttons on the other side. But even looking at the HS3000 itself to figure this out could be made better. The play/pause and forward/backward buttons are designated by tiny symbols indented on them. If these symbols were painted in white (or yellow), they would be much more visible than they are. I usually have to tilt the dongle back and forth until the light glints off it just right in order to see the indentations. This means that quickly pausing whatever you are listening to is usually out of the question. But even if you do manage to find the button quickly, it takes some dexterity to not also squeeze the button on the opposite side of the device simultaneously.
And what is the easiest button to press of all? The large dedicated 'Call' button on the front face of the HS3000. Pushing this button quickly answers and hangs-up on phone calls. Pressing and holding initiates a dial-by-voice feature. This is great if you are working in a call center, taking and placing calls all day, but if you are like me, you rarely (if ever) talk voice on the phone and would mostly use this device to listen to podcasts and/or music. That is where this button is a big fail. If the dongle is clipped anywhere other than your shirt pocket, it can be easy to accidentally push (and worse push-and-hold) this button, which throws you into the voice dialing system of your phone. You can't just wait for it to time out, because the microphone might hear something and then start dialing a random number from your contacts. You have to fish out your phone just to cancel the feature you didn't want in the first place. Samsung could fix this by having an option that changes the 'Call' button into the 'Play/Pause' button. Such an option could be automatically initiated when the phone connects without using the Bluetooth HFP profile. (BTW, If you tell your phone to only connect to the HS3000 for Media Audio -- not Phone Audio, then the dedicated 'Call' button does nothing, which at least eliminates the annoying accidental presses).
Second worst feature: clip-only. Some of these devices (like the BT3030 and S705) allow you to either clip the device somewhere or wear it around your neck like a necklace. The HS3000 can only be clipped somewhere. If you want to use the built-in microphone to talk on calls, finding a place to securely clip it can be challenging. If you only wear button-up shirts with pockets, it's not so much of a problem. But any other attire and you likely have a problem. The manual states that you must not clip it to a belt loop but, at least for many guys, that is the most natural place to affix it. Unfortunately, it is also the most likely place to have that big dedicated 'Call' button accidentally pressed (see above).
*** Conclusion
The HS3000 is above average in most respects, featuring easy setup, quick connection, and above average reception. Its down-sides are tiny indistinguishable buttons that are easily pressed two-at-a-time, a big 'Call' button that can be accidentally pressed (which would be so much better if it was a 'play/pause' button), and clip-onto-clothing only design.