Bose QuietComfort Ultra Headphones Colour:Black 5" fullrange drivers for high

5" fullrange drivers for high intelligibility speech reproduction from 110 Hz - 14 kHz (-10 dB) with 118 dB peak SPL (1 m

A cone moving this far at this frequency will supply so many dBs and no more

The silver cladding on the OFC conductors reduces surface oxidation over time

3 Bluetooth Range Up to 9 m (30 ft) Multipoint Connection Yes — connect 2 devices simultaneously Built-in Microphone Yes — for calls & voice assistants App Support Bose Music App (iOS & Android) Water Resistance IPX4 (sweat & splash resistant) Country of Origin China

3db tweeter attenuation switch that allows you to adjust the treble to suit your listening

Bose QuietComfort Ultra Headphones Colour:Black 5" fullrange drivers for highBose QuietComfort Ultra Headphones The Bose QuietComfort Ultra Headphones deliver world class noise cancellation, quieter than any previous Bose over ear headphone. Breakthrough Bose Immersive Audio creates a spatialised listening experience, while luxe materials and an elevated design ensure unrivalled comfort for all day wear. Three listening modes Quiet, Aware, and Immersion let you choose exactly how you engage with your music and the world around