JBL Under Armour Sport Wireless Train

Simple controls ; IPX4 weatherproof rating ; Exceptional sound quality

Tight fitting ; Mediocre battery life

Powerful, bass-forward audio performance. Secure-fitting, sweat-resistant design. Includes detachable cable with remote control for passive listening.

IP rating isn't as high as many exercise-focused audio products.

Sonically, JBL's Under Armour Sport Wireless Train headphones deliver a strong listening experience, with powerful bass depth that will appeal to those who enjoy working out to a little extra low-frequency push. And from a design perspective, there...

Powerful audio performance with solid bass depth and crisp highs. Built-in heart rate monitor. Heart rate readings available by tapping earbud.

Easy to accidentally skip tracks when adjusting volume. Requires phone nearby to track fitness stats.

Conclusions At $200, the JBL UA Sport Wireless Heart Rate offers a solid audio experience and reliable fitness tracking, so long as you don't mind keeping your phone nearby. If it's intense bass you're looking for, the Bose SoundSport Wireless won't...

Intense bass response balanced out with crisp highs. Secure, sweat-resistant design.

Not for those seeking an accurate listening experience.

Most exercise-focused earphones feature booming bass, but the JBL UA Wireless may take the cake. If you're looking for a gym-friendly Bluetooth pair with a bit more balance, you might have to adjust your definition of what balance is, but we like the...

Flex zones allow you to loosen or tighten the headphones' neckband ; RunSafe blinking LED helps keep you safe during nighttime or low-light activities. ; Fast charging.

Magnetic ear bud feature doesn't work all that well. ; Neckband doesn't fit well with collared shirts. ; Ear tips might not create a good seal for every consumer.

I really enjoyed my time with the UA Sport Flex Wireless headphones. You might find smarter wireless headphones on the market, but you’ll be hard-pressed to find a more practical sports headphone. The neckband design with integrated flex zones worked...

Sound great (in the right position) ; Fully secure, even during exercise ; Heart rate readings are accurate

Can be painful after long periods ; Difficult to position correctly ; Earbud sizes don’t suit all ears

Proper fitness ‘phones that track your heart and sound superb - but are too much of a faff to use