Backed by Technics' legendary sound quality, EAH-AZ40 earbuds feature superior audio, exceptional comfort, and sparkling call clarity for home, work, and travel. Unleash a true high-fidelity sound experience in comfortable earbuds. The unique design of the Technics acoustic chamber, harmonizer, and 6mm drivers delivers clear sound with a sense of range and depth. Lose yourself in smooth, detailed highlights and bass. With 6 individual mics and advanced wind noise reduction, EAH-AZ40 transmits your voice clearly on each call; JustMyVoice Technology isolates and amplifies words while minimizing surrounding noise. Compact, lightweight earbuds fit snugly and comfortably; 4 sizes of silicone earpieces (XS, S, M, L) give a customizable fit and ensure immersive sound with IPX4 water resistance. Natural ambient mode comprehensively captures voices and other surrounding sounds, leading to a more natural sound similar to not wearing headphones at all. Captures wide range of sound from low to high frequencies. Attention mode reduces unwanted external noise to make it easier to hear people's voices. It's perfect when you need to hear airport announcements, etc. New Technics Audio Connect app makes pairing easy, helps tailor noise cancelling and sound mode settings to your exact specifications, and assists in finding your headphones. Get up to 7.5 hours on a single charge, with a total charge of up to 25 hours in the compact charging case. Quick charge for 90 minutes of playback. Charge and take your earbuds in and out easily from the case.