With 60 years of acoustic expertise, the AZ100 delivers incredible quality and a realistic sound experience. The Magnetic Fluid Driver, Adaptive Noise Cancelling and Voice Focus AI ensure uninterrupted music and calls, and Japanese technology brings reliability and smart features for a premium experience. Magnetic Fluid Driver for low distortion, accurate bass and high resolution. Adaptive Noise Cancelling Technology adjusts in real-time to block ambient noise and maintains optimal ANC at all times. Voice Focus AI technology brings advanced noise reduction not only during speaking but also listening. Multipoint connection to 3 devices with seamless switching (e.g. PC, smartphone & tablet). Spatial audio optimized for Dolby Atmos® and Dolby Head Tracking. Driver Unit (mm) 10 mm (3/8 in) Playback Time with Battery (LDAC) Earphones Approx. 7 hours (NC ON) Approx. 8.0 hours (NC OFF) Bluetooth® Wireless Technology Version 5.3 Supported Profiles A2DP, AVRCP, HSP, HFP Supplied Accessory USB charging cord: Approx. 0.2 m (0.66 ft) (Input Plug : USB Type-C Shape, Output Plug : USB Type-C Shape), Earpieces set : XS1, XS2, S1, S2, M, L, XL (M attached)