BATTERY LIFE: Our engineers fitted two core batteries for up to 135 hours of power – that's over five days of playback. A dual-core chipset keeps AI-powered Active Noise Cancellation in full force for over 75 hours on a single charge. FAST CHARGE: Get 8 hours of playback in 5 minutes. And go from zero to full in 2 hours. ACTIVE NOISE CANCELLATION (ANC): Using AI to power dual feedforward and feedback microphones, three levels of Active Noise Cancellation block distractions. Transparency Mode lets the world in by picking up sounds from your surroundings in real time. LOSSLESS AUDIO: Headphone (a) is Hi-Res Audio certified for wired and wireless listening. Our engineers used LDAC wireless technology for high-quality 24-bit/96kHz audio without cords, and you can connect with a USB‑C or 3.5 mm jack BUTTONS: Headphone (a) combines precise controls with tactile feedback for effortless interactions. The mechanical Button, Roller and Paddle turn every adjustment into a sensory experience.