Sharkk Flex Bluetooth Headphone Earbuds Wireless Workout Sport Headphones Premium Sound and Perfect Fit &#x1f4a7;PERFECTLY BALANCED HEADPHONES  The Sharkk Flex Bluetooth headphones feature high quality digital sound. &#x1f4a7;BATTERY LIFE & RANGE - The Flex earbuds from Sharkk have a rechargeable 85mAh battery that provides 6-8 hours of continuous play or talk time. &#x1f4a7;RANGE  These Bluetooth earbuds also have a pairing range of up to 30 feet, so when you are in the gym you can leave your phone at a safe distance. &#x1f4a7;COMPATIBILITY - Using the Bluetooth 4.0 technology you can pair these headphones with your iPhone or Android phone or tablet. &#x1f4a7;DESIGN  The Sharkk Flex Bluetooth headphones feature a flexible silicone ear hook to help them comfortably stay in place during your most strenuous activities. You can also easily rest the headphones across your neck using the wire that connects both earbuds.