Established in 2009, Awei specializes in R&D and production of audio products with many years of experience. Our goal is to provide customers with the highest quality audio products through hundreds of hours of research and meticulous engineering. We have designed true wireless earphones to provide you with complete freedom; noise-canceling earphones that allow you to block unwanted background sounds; high-definition earphones that allow the person you speak to hear clearly; and the most advanced Fitness tracking sports headphones to help you beat your personal best. Please provide AWEI products directly from AWEI to ensure guarantee and high-quality customer service. Specification Whole earphone weight: 37g/Single malt weight: 4g Bluetooth 5.1 IPX6 level strong waterproof/sweat-proof function Earphone + charging compartment with use time (80% volume): 30H What's in the box A pair of aweier headphones 3 pairs of ear caps (large, medium and small) A data cable A brochure