Sony wh xb900n Get extra bass and next-level noise canceling in a comfortable headphone. Long-lasting wireless freedom brings up to 30 hours of battery life, outlasting even the longest travel day. Touchpad controls bring advanced functionality to your music. Enjoy smartphone connectivity with Alexa and the Google Assistant built in. Driver Unit: 40 mm, Frequency Response (Bluetooth Communication): 20 Hz–20,000 Hz (44.1 kHz Sampling)/20 Hz–40,000 Hz (LDAC 96 kHz Sampling, 990 kbps). WhatsApp