Sport Headphones with Microphone, Running Exercise Stereo Earbuds, in Ear Earphones 3.5mm Jack Earphones Neckband Workout Headsets for Running Gym Jogging Etc(Blue);

Smaller Earbud Design For Small Ears
Ear buds of these running headphones are smaller than other standard running earbuds. Once earphones are seated in your ears, you won't feel bulky, uncomfortable or hurt even after long time wearing.
There are 3 sets of ear canal pieces for you to switch. The earpods will not pop out and custom fit in ears with proper size ear inserts.
The ear hook wire is ear shape memorized and flexible enough to work with different ear shapes.

Stay Put In Ears During Workout, Even After Sweating
In ear angle is specailly design to get secure fit. The loop over the ear wire is gentle and fits around the ear. It keeps the workout headphones in place even while sweating.
You don't have to adjust the slipping out earbuds in your run. No interrupt to your gym workout any more.

Lightweight and Sweatproof Headphones
These are also light weight and comfortable workout headphones. Sometimes you will even forget you are wearing them. They are sweat proof and good exercise headphones for running, jogging, weight lifting, cardio, etc.

Hands Free Music And Phone Call Control Feature
These are sports earbuds with microphone. You can answer a call with your phone in a arm case whiling working out. The in line button allows you to control the music track in your run conveniently.

Product Technical Details
Wearing Method: back-band
Plug:3.5mm
Cable Length:1.2m ± 1.5mm
Sensitivity: 90db ± 3db
Impedance:32Ω ± 15%
Frequency Range:20-20000Hz
Rated power:3mW
Max Power:5mW
Drive unit Size: Φ10mm
Directivity: Omnidirectional
Sensitivity: -42db ± 3db