The Good The Denon AH-W150 Exercise Freak in-ear Bluetooth headphones support wireless audio streaming from Bluetooth-enabled devices. They're sweatproof and relatively comfortable to wear, and offer decent sound for wireless headphones. They have a built-in microphone for cell phone calls, as well as transport and volume controls. The included carrying case is nice.
The Bad They're fairly pricey and they won't fit everyone equally well (which can affect sound quality).
The Bottom Line While in design they may resemble a pair of jumbo hearing aids, the Denon AH-W150 Exercise Freaks are among the better wireless sports headphones available.
Wireless headphones for workouts
I'm not sure when a company will truly perfect a pair of wireless sports headphones, but Denon's $149 Exercise Freak in-ear Bluetooth headphones get you about 80 percent of the way there. I found them comfortable to wear and, just as importantly, they fit securely and I had no trouble getting them in my ears. They also sound good for Bluetooth headphones, though just how good they sound will depend on how tight a seal you get.
The Exercise Freaks come in blue, yellow, and black, and as you might expect from sports headphones, Denon says they're sweatproof. I liked them, though they do have a few small drawbacks. First, they're a bit pricey (compared with some of their direct competitors, at least) at $149. Secondly, not everybody will like their design, which can come off looking a little too much like a pair of oversize hearing aids. But if you can live with those issues, the Freaks are some of the better wireless sports headphones I've tested.
Design and features
To put the Exercise Freaks on properly takes a bit longer than it takes to put on your typical pair of in-ear headphones. First, you have to hook each earpiece onto each ear, after which you guide the articulating ear pieces into your ear canal. It's a little bit of a process, but once you get everything lined up, the earphones fit very securely and really don't move at all now matter how much you shake your head.