KuaiFit Sport Headphones with Cycling Speed and Cadence Sensor - Heart Rate Monitor, Fitness Tracker, MP3 Player, 8GB Memory, Bluetooth, BLE, ANT+, Audio Coach - Cycle Bike Triathlon

Hey guys!I'm very rarely drop the review about products, but now is the case where I need to help to avoid to buy this junky staff.I ordered full set with bike speed and cadence sensors. First huge cons - based on description this is a very connectivity-friendly device. But I cannot connect bike sensors to Strava application on my Android phone along with heart rate sensor. So, may be yes, with top rated Garmin watches this device will work who knows, but in common situation it is suck.Second cons - based on description at the site or in some interview I found information that the creator of this device was inspired by triathlon trainings and he designed the best of the best. NO! Each time when I wear this device I had huge issue with comfort and feet. I CANNOT TURN the head without scaring to loose headset from my phones! Who knows, may be this is a best practice in a race condition just to focus on the road, but in every day commute it will be nice to have information about cars/guys around you.Finally, third important cons - bluetooth quality. One of the main feature of this device - to cast music from your phone/watch. The sound quality is terrible and stream broke every second with cracks and other annoying noise. It so uncomfortable to hear music of this quality! Also it is again depends on head turns or device touching. Some small interactions from my neck or ears to device and sound brakes. So, you have only one option to listen music from device, BUT! I never had tons of music locally, I prefer to user cloud stream services like Amazon music to find the best that fit my mud exactly at the training.Strange thing - when device updated to use imperial units I have numbers in metric system but measurements in imperial. Example - I ride 2 miles and device said that distance 3.8 MILES! completed! I never saw before to interesting measurements converting.Yes, we have some pros here too. It possible to connect heart rate with Runtastic app at smartwatch. And that's all!So, guys, do not waste your money - if you need to have some staff for trainings/triathlon preparation please go to professional electronics that used by pro across the world and in championships too. Yes, it cost other money, but it worth's it.If you want to have awesome music quality and device comfortability and everyday usability - please go again to pro in this area like Bose and so on.

I am loving these headphones. They fit perfectly, I never feel like they are going to fall out. They are very sleek looking too, high quality product. I love that it helps keep track of my pace and my speed, the heart rate monitor is cool and I don't need to have my phone on me to listen to music!The coolest thing about this though, is the coaching programs. You can choose from whatever type of workout you want to do from their store (I am told more programs are on their way) and then you have an actual trainer coaching you in your ear!

The headphones work great and after very brief tinkering I've gotten them to fit in my ears comfortably and without falling out. Easy to load music and have a playlist. I'm a bit of a techie so I checked accuracy of both heart rate and odometer and they are as close to on as one could hope. I was actually surprised the accelerometer was as accurate as it was...just about as good as GPS.One slight glitch is while the distance and pace are spot on, the voice pacer is off so it tells me I'm running 3 minutes per mile and is always telling me to slow down in coaching mode. Easily solved by using heart rate coaching instead. I have replaced my phone with these for pacing and listening to music.

Initially had some issues getting the device registered on the website, but their staff were very helpful and quickly solved the problem. Found the workout profile settings very easy to navigate. Good selection of plugs to fit different size ears.

I was so excited to get these headphones and start using them! I'm still learning all that they can do but loving them so far. It's so nice being able to run and workout without bringing my phone. I haven't tried out the cycling sensor yet but looking forward to trying that out soon. The downloadable training plans are great and it looks like more will be available soon. These are super comfortable and stay put during the workout.

Great headphones! It is easy to sync them with a phone and they fit great. Very comfortable and light, can hardly feel them on. The workout programs are great and really make it easy to stick with a plan.

These headphones are great. They sync with your phone well and its cool that your workout plan is in your ear. Outside of the function of the headphones the fit is perfect. They wrap around your ears well and you barely realize they are on. 5stars

Heart rate monitor began failing after 3 months. Multiple attempts to contact product support on their website went unanswered. Buyer beware