The Good The Motorola S11-Flex HD is lightweight, wireless, sweat resistant, and comes with lots of ways to adjust its fit. The headset also charges quickly.
The Bad The S11-Flex HD is tricky to strap on and delivers mediocre call and audio quality.
The Bottom Line Motorola’s S11-Flex HD makes for a great workout companion but phone calls aren’t its strength.
A headset best for the gym, not making calls.
If you’re looking for a laudable gym buddy, the $129.99 Motorola S11-Flex HD has a lot going for it. The stereo Bluetooth headphones shrug off sweat and exposure to moisture, plus once adjusted stay firmly in place. It’s an adequate music player, too, and lets you take that important phone call if you need to. Just don’t make a habit of it, since the device’s call quality is subpar at best.
When you first see the S11-Flex HD, it’s clear the device has a pretty wild-looking design. Unlike most of the wireless stereo headphones on the market, which tend to be on-ear or earbud styles, the S11 uses an over-the-ear design. These kind of headsets are typically tough to position comfortably, especially for eyeglass wearers like myself. Motorola tries to solve this by crafting the S11-Flex HD to be highly adjustable.
For instance, you can pull the earbud stems up and down. They also swivel a bit too. The headband is flexible as well and Motorola also bundles fours sets of different sizedeartips to accommodate large and small ears. Additionally, you can attach a rubber strap for greater stability.