MiiKey MiiSport Black Wireless Bluetooth 4.0 Headphone with Microphone ,Built-in MP3 player,Supports Micro SD,Sweat-proof and HD Audio

Perfect for running! It is a bit tight, but it stays on my ears. I love it!

In as many ways as possible, completely unsatisfactory.Out of the box, these seemed bad. Surprisingly heavy for sport headphones. Fit is uncomfortably tight. Once turned on, voice notification for "power on" sounded sluggish, like it was slowed down. Would announce pairing mode, but would never appear in any devices available list.After letting it charge for 24 hours, no improvement. FAQs describe LED patterns that I never saw: powered on the light was purple, in pairing mode, also purple, holding down the play button produced a white light, not of which is described in the poorly translated (or just poorly written?) manual. Once powered off, the light remained on, color was random, sometimes purple, white, green, or yellow.After playing around with different combinations of buttons, charging, discharging, and different blank micro SD cards, I finally got the voice to sound normal (no longer slowed down), but the unit would no longer enter pairing mode.After continuing to try more button combinations and charging cycles, I finally gave up.These are trash. Save your money.

Good sturdy headphones, work as instructions say, good sound. My problem is that I'm a woman and they're too big for my head, no way to adjust. I used them once, they fit snug on my ears but the strap doesn't go on my head it just rests on my neck. After 25 minutes on an elliptical machine they were falling down. I'm returning them. Buyer beware - no free return.

As other reviews have mentioned this device is a bit oversized and quite heavy. The headphones fit very snug and there is no chance they will fall off, however, an hour into my first workout of just stationary weightlifting I had to remove them as they were becoming quite uncomfortable. I bought these primarily due to the built in micro SD slot and MP3 player. This function worked although there seems to be no option to shuffle the songs, it instead seems to play them by Artist (sorted by title on the SD card) which will get a bit old after awhile. When playing an SD card the green light on the right side will flash and the light seems very bright... I feel like this would be very annoying to the people around me so I plan to cover it up with a small piece of electrical tape. The device paired easily with my Sony Xperia SL phone and Bluetooth was clear up to about 15 ft away with direct line of sight.

this item fell short of my expectations

They went through the washing machine and dryer and still work perfectly. Excellent product. Owned mine for over a year now and they rock!

Works well, fits well, rugged enough for everyday wear at work.

I bought it as a gift for my son who hikes. He has no complaints. Great product.