Joysounds Bluetooth Headphones Lanzz V4.1 Wireless Stereo Sports Headset for Running Gym Exercise with Microphone for iPhone iPad Samsung and More (Black) HD SOUND - 10mm Speakers combined with Bluetooth 4.1 create super accurate HD sound with powerful bass. The bullet-shaped Comply T-400 M memory foam tips provide Total Isolation from external noise. SWEAT PROOF - Say Goodbye to Sweat-Damage! Protected by Liquipel Nano Coating your Buds withstand sweaty workouts and will survive accidental dropping into water - Guaranteed! MICROPHONE - The built-in microphone makes it possible to use the headset for Calls. The headset reads out the callers number when a Call comes in, and the Audio you were listening to is silenced. When you hang up, audio starts back up automatically. LONG LASTING BATTERY - Our wireless earbuds for running & workouts built-in polymer 110mAh battery in the Bluetooth headphones wireless device provides 8 hours of talk & playing time & 110 hours of standby time. You charge this product using a USB charging cable. EASY TO USE - The volume, sound, song selection and telephone controls are all right on the wireless Bluetooth earbuds, making it easy to navigate through your music without pulling your device out. Which wireless bluetooth headphones allow us to go up to 33ft away from my device and they will still work - this means I can leave it in my purse while I work out and walk around the gym.