The MW07 True Wireless Earphones Handcrafted acetate creates a beautifully eye-catching and durable finish, with a lightweight, slim design. Each pair of wireless earbuds may vary in its exact pattern and color due to the material and hand finish. Custom 10mm Beryllium drivers deliver rich, expansive sound, while 2 beamforming mic arrays provide clear calls. 10 hour battery life with an additional 3 charges in the stainless steel charging case for a total of 40 hours playtime. Excellent connectivity features Bluetooth 5.0 with quick pairing technology and a 30m/100ft connectivity range Patented silicone Fit Wings in 3 sizes and ear tips in 5 sizes create a tight seal and comfortable fit. Master & Dynamic With an unrelenting attention to craft and detail, we create sound tools to help focus, inspire and transport your mind. Brilliant sound and design motivate everything we do. We have a deep passion for building beautifully crafted, technically sophisticated sound tools. Designed to be modern yet timeless, our products utilize only the finest materials and are engineered to last, creating the perfect balance of aesthetics, strength, comfort and exceptional sound.