
It can also automatically adjust to a lower bitrate of 330kbps or 660kbps to increase stability. They also worked fine as a headset for making calls, but don't expect business-class performance. This type of device allows you to listen at lower volume levels. You will quickly get used to adjusting the device by pinching by the sides, otherwise you will hit the controls. It is so much more reliable to change from my phone that I just do this.
#Jbl endurance sprint won adjust volume driver
The driver unit is the component that produces sound in the device. I was not able to change the volume one time without pause / play / fast forward.

I thought they sounded a little better than the JBL Reflect Mini 2 wireless sports earphones, which I also liked, but are more expensive. The device sits tightly in place, creating an acoustic seal which reduces background noise and prevents your music from leaking out. There's a touch of presence boost in the treble that leads to a little sibilance (another way of saying the headphones are a tad bright) but there's plenty of bass and decent clarity and openness. That quick charge is quickly becoming standard on these types of headphones.Īs I said, these sound quite good, and I'm not sure I've heard $50 in-ear sports headphones that sound any better. Things got a little trickier raising and lowering volume (I opted to use the volume controls on my phone).īattery life is fairly decent at eight hours and there's a quick charge feature that gives you an hour of playback from 10 minutes of charging. I found it easy enough to pause and play music (one tap) and answer/end calls (also one tap) and skip tracks forward (two taps).

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The touch controls are responsive but a little finicky.
