TaoTronics Bluetooth Headphones Wireless Earbuds Bluetooth 4.2 Sweatproof Earphones Magnetic Earbuds Snug Fit for Sports MEMS Mic 6 Hours Playtime This Certified Refurbished product has been tested and certified to work and look like new, with minimal to no signs of wear, by a specialized third-party seller approved by Amazon. The product is backed by a minimum 90-day warranty and may arrive in a generic brown or white box. Accessories may be generic and not directly from the manufacturer. Perfect workout headphones that are snug and secure so the headphones stay put while running, biking or at the gym. SunvalleyTek is the ONLY authorized seller of TaoTronics Brand products, 2nd hand purchase or purchase from a non-authorized seller/distributor will not covered by our warranty. Built-in magnets let you attach the two headphones together when not using, and wear like a necklace around your neck, a convenient way to carry around when you don't need them. The rechargable long battery life means you get 6 hours of continuous music, or can relax with 175 hours of standby time when powered with a 5V external charger. cVc 6.0 Noise Cancelling Microphone reduces outside noises, enable clearer microphone sound.