With its 6mm driver, unique acoustic structure, and industry-leading active noise cancellation, the AZ40M2 delivers a clear sound advantage. Seamless switching between devices, superior call quality, convenient use of a single earbud, easy sound control, and long battery life are all included. The flat design and optimized ergonomic fit ensure all-day comfort and are balanced so that nothing slips. The unique Technics acoustic technology provides a detailed, rich, and engaging sound experience. The EAH-AZ40M2 lasts 7 hours on a single charge (24 hours with the charging case) and 5.5 hours with active noise cancellation (18 hours with the charging case). The Technics Audio Connect app simplifies the configuration and control of the EAH-AZ40M2, offering compatibility with voice assistants and the ability to customize sound mode settings.