These earbuds work as advertised and very well at that. They are lightweight, and the cord can be cinched up behind your head to prevent pulling. The ear wings, once fitted properly, reduce strain in your ear canal on long runs. With lots of bouncing around these last for hours, accurately reading heart rate and playing music, podcasts, and cues. Overall they are very good headphones, and while the do Isolate a bit, you still get enough ambient sound at low volumes to use these safely in an urban environment.
That said, this is my third pair in a little over a year. The first pair just stopped working suddenly (totally defective, refunded 100% by Amazon seller), while the later pair slowly gave out over a period of about a week after almost a year of hard use.
I run 5 days a week and have been pleasantly surprised how well these wore. The rubberized control area word down to where the raised portions were basically gone. The Battery started not holding a charge, and I lost one of the 6 provided ear canal adapters. I ran in the rain, in the cold, and in the heat of Houston summers, and these things never complained once until right at the end of their life.
When I contacted Jabra within a week of my warranty expiring regarding the defective unit, they issued an RMA, paid for shipping, and got me a new pair within 2 weeks. Those two weeks of running with wired headphones or none at all cemented my appreciation for these little beauties. If I have to replace them every year under warranty I'll still be a happy customer, but I'd be a lot happier if I could just own and love these for several years.
I have a Garmin watch now and a "grown up" heart rate monitor, but these little earbuds were accurate enough to safely and effectively do heart rate training without the fancy and expensive watch. The heart rate jumped around more than the chest-strap monitor (obviously) but overall provided a very accurate and trustworthy reading without the fussing over tightness or interference you get from wrist-mounted HRMs.
Overall completely satasfied customer and recommend these without hesitation, just save the receipt in case you need to return it under warranty.
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