One advantage stereo Bluetooth headsets have is that you can easily wear them while working out since they lack wires to get in your way. Many manufacturers now give headsets sports-centric designs that wrap behind the neck--thebeing one of the more popular ones. BlueFox Extreme has followed suit with its BF-401. It's certainly lightweight and it has multipoint technology and decent audio quality. The BlueFox Extreme BF-401 costs $80, but you can get it cheaper online.
As we mentioned, the BF-401 is an around-the-neck-style headset. It measures 5.32 inches wide by 5.37 inches tall by 2.5 inches thick and weighs about 1.08 ounces. The earpieces hook behind the ears and are connected to two rather thick bases, which are then connected via a slim neckband. The earpieces are small and do not go too deep into the ear; they sit gently at the ear opening. BlueFox Extreme didn't include custom ear gel fittings with the headset, but we still found the fit to be comfortable and secure. However, its neckband is quite stiff. If you're wearing a collared shirt, the neckband may catch the collar.
The base of the right earpiece houses the headset's controls and the battery. The controls consist of two rockers on its top; the front rocker is for the power button and the volume controls, and the back rocker corresponds to the music player controls. Both can be pressed as well. Toward the front of the volume controls is a small LED indicator. The charger jack is at the bottom of the right earpiece base. Though the controls are tiny, we found the rockers easy to manipulate, as they are both raised above the surface.
We tested the BlueFox Extreme BF-401 with the Apple iPhone 3G. Overall, the BF401's audio quality was quite good. Since the earbuds do not seal the ear, you don't get a very full bass effect. However, just for the purposes of running or working out, they work great. Since the earbuds don't seal the ear, you can hear environmental noise, which is good for avoiding traffic if you're running outdoors.