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. IPX6 Splash Proof Build: Nano coating protects the earphones when exercising and during rain Lightweight and Comfortable: Sports headphones feature an ergonomic design with highly elastic, adjustable silicon earbuds; weighs barely 0.53 oz / 15 g