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

【 Smart Function 】Our Bluetooth Headset with mic supports SIRI voice prompt and mute switch, one key to Power on and enter pairing mode,1 to 2 connection. 8-9 hours working time, 1.5 hours quick charge. With 33ft (10meters) Bluetooth working range. 【CrystalC Clear Audio】Noise Reduction boom microphone and Dynamic Speaker broadcasts your speech clearly when you move around and perform your tasks while having a phone conversation or speaking to a crowd. 【Universal Compatible】 -Bluetooth V4.1 headset supports Calling and Music Playing function, easy and fast pairing with smart phones and tablets(Bluetooth v4.2 or lower), compatible with iPhone(X), Android, and Other Leading Smartphones