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Sennheiser HDB 630 (Black)
Model: HDBT / HDB 630, U.S. Black SKU 700445 · US configuration
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Black U.S. HDB 630 over-ear ANC headphones, selected as store SKU 700445 and identified as model HDBT in the manufacturer manual. Its included BTD 700 dongle supports an optional high-resolution Bluetooth arrangement; standard-resolution Bluetooth playback has the longer published ANC-on rating.
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Explore this buying guide ↗Why consider this model?
- A source-supported option for someone who needs over-ear ANC, two active Bluetooth connections, a supplied USB-C Bluetooth transmitter, and analog or USB-C listening alternatives. The standard-resolution ANC-on maximum is 60 hours; the optional 24-bit/96 kHz BTD 700 arrangement is rated up to 45 hours.
Tradeoffs to weigh
- The 60-hour figure is a manufacturer maximum in standard-resolution Bluetooth mode, not a personal runtime guarantee; enabling 24-bit/96 kHz with the BTD 700 reduces the published maximum to 45 hours. Sennheiser says the headphone must be switched on for every input, so the analog cable is not a battery-free fallback. Its current support specifications list 311 g while the HDBT manual lists about 293 g; the conflicting manufacturer figures are left unresolved. The battery is built in and not exchangeable, and the product is not waterproof or sports-rated.
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