8 Active Noise Cancelling microphones cancel up to 40dB of unwanted noise. Up to 55 hours of listening w/ ANC on. 10 Minute charge delivers 2.5 hours of extra battery. Digital Signal Processor. Double-tap ANC between Isolation mode and Transparency mode. Crystal-clear calls with Dual beam-forming microphones. Auto off function after 30 minutes. Soft microfiber ear cushions. Three preset EQ modes. MyDyson app. Durable aluminum construction. Dimensions: 4.1" x 7.87" x 8.27". Includes: OnTrac slimline case. USB-C Charging cable.