Sennheiser HDB 630 Wireless Over-Ear Headphones – Black

The Sennheiser HDB 630 in Black is a closed-back, over-ear wireless headphone designed around a 42 mm dynamic transducer. Adaptive noise cancellation helps reduce background distractions, while parametric equalisation and crossfeed provide ways to tailor listening through the companion software. The included BTD 700 USB-C Bluetooth dongle adds aptX Adaptive transmission to compatible USB-C devices, rather than relying solely on a phone’s built-in Bluetooth codec support. Audio up to 24-bit/96 kHz is supported over USB-C and suitable aptX Adaptive connections. Battery endurance depends on the listening format: Sennheiser specifies up to 60 hours at standard resolution, or up to 45 hours with 24-bit/96 kHz aptX Adaptive playback through the BTD 700. Alongside the dongle, the box contains USB-C and 3.5 mm cables, an in-flight adaptor and a carrying case.