[High Definition Audio with LDAC] The W830NB features a large 40mm dynamic driver and independent acoustic room layout, supports LDAC high resolution decoding for high-resolution wireless sound, ships with 990kbps transfer rate, offering 3X music details from standard Bluetooth codes and rich sound quality that makes you feel every note. [-45dB Noise Reduction] Advanced hybrid digital noise reduction technology achieves noise reduction of up to -45dB, an increase of 18% from previous generation. Supports four ANC modes that hear you want by changing modes. [Immersive spatial sound] With three-dimensional algorithm for sound tonic, creating a cinema-level surrounding atmosphere for an immersive stereo listening experience. [Amazing 94 Hours Playtime & Fast Charging] With a built-in large-capacity battery and low power chipset, it offers impressive 94 hours of continuous music playback with ANC output. The fast charging function supports up to 10 hours of operation on a 15 minute charge. Easily extends usage without the hassle of frequent charging. [DNN noise reduction for clear calling] Deep neural network (Deep Neural Network, DNN) noise reduction technology intelligently detects speech and accurately separates human sounds from noise, so you can speak clearly even in noisy places. [All Day Comfort & Foldable] Ergonomic design with soft, comfortable ear pads and adjustable headband, weighs about 265g for longer listening sessions. Fully foldable design for flexible portability, travel-friendly. [Latest Bluetooth V5.4 technology] With the latest Bluetooth V5.4 technology, you can enjoy a more stable and smoother connection when playing music, online meetings and calls. [Customizable settings] The EDlFlER ConneX App has three preset EQs and also supports dedicated EQs for a personalized listening experience.