[Great if you can't stand earbuds] It would rest outside of your ears instead of within the ear canal. Ergonomic design of this headphone when you are on the treadmill, it stays in place so much earbuds. Wearing these with glasses is still comfortable. Would not ears ore like with earbuds [Extremely & compact] The headphones are light enough that you don't even notice them when go for a run with them on which makes running easier to get through with my music shuffle. Use these earphones for backs packing and in the gym. Can easily put them in the pocket. Can wear them with your head on a pillow or under a hat Experience true hands-free calling and enjoy music . Calling is in stereo, call quality sounds like when you are holding a phone [Extend usability battery life with top sound] Headphones are arrived fully and ready to go out of . Use it several hours a day and charge it on Monday, the battery would last the whole week Portable bluetooth earphones wireless sports earphones music stereo earphones mini earphones with mic fm radio for pc to mp3 [Perfect headphones for running] Run and share trail with other people/bikes. You want to hear them approaching from the back. Smaller would-be for hot summer runs. You may also like the fact that Sound control is easier this way when your main focus is running. Bluetooth standard: V4.2 Support mode: , HFP, A2DP, AVRCP Transmission power: Class2 Frequency range: 2.4026GHz-2.480GHz Transmission power: Class2 Transmission range: 10 meters Charging time: less than equal 3hours Talk time: equal 7hours Music listening time: equal 6hours Standby time: equal 120hours Support FM music playback: 87.5-108Mhz Support TF card music playback size:6x 14.5x 18cm Material:pvc colour:Black Package Contents: 1 x wireless bluetooth headset 1 x mini usb charging cable 1 x portable headphone pouch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.