Sweatproof Earphones: Water-resistant Nano-coating efficiently protects sport headphones from sweat and ensure more guaranteed life span,perfect for running, jogging, hiking, yoga, exercises, gym, fitness, travelling and etc. | Enhanced Comfort & Wearability: We have improved the ear hooks to the proper hardness for snug fit. 2. Additionally come with a pair of memory-foam ear tips (adapt to ear canal to provide a perfect seal and snug fit to help keep your earbuds in place) and a cord clip. | 1 Hour Quick Charge for 4 Hour Playing: Improved lithium polymer battery brings up to 4 hours pleasure musically and socially with a quick charge of only 1 hours. | Additional 2 Pairs of Eartips: Extra 2 pairs of regular ear tips in different sizes for your custom fit. | Satisfaction Guarantee: Our earphones are guaranteed with a 45 days money back & 18-month warranty.