iansean Muset1c Wireless Sports Bluetooth 4.1 Stereo Apt-X Earbuds Handsfree (White) Military-grade moisture resistance and rugged, tangle-free cable won't let you down Ergonomically designed makes it impossible to fall out of ears and comfortable to wear. Compact and super lightweight struction makes it handy and portable. Inline controls make it easy to take calls, skip tracks, and adjust volume 5-7 hours Listening time depends on volume of sound and Music style. Earbuds seal in the crisp highs, natural mid-tones, and rich bass so you hear every nuance