Sennheiser HD 450BT Instruction manual HD 450BT - Page 31

Specifications Specifications Model: SEBT4 Wearing style Bluetooth® around-ear Ear coupling circum-aural Transducer principle dynamic, closed-back Transducer 32 mm Frequency response 18 Hz to 22,000 Hz (-10 dB) Sound pressure level (SPL) 108 dB (1 kHz/0 dBFS) THD (1 kHz, 100 dB SPL) < 0.3 % (1 kHz, 100 dB SPL) Microphone principle MEMS Microphone frequency response 80 Hz to 6,000 Hz (-3 dB) Microphone pick-up pattern dual omni-directional microphones (speech audio) 2-mic beamforming array Power supply built-in rechargeable lithium-polymer battery: 3.7 V ⎓, 600 mAh USB charging: 5 V ⎓, 500 mA max. Charging time of rechargeable battery approx. 2 hours Operating time 30 hrs (music playback via Bluetooth with ANC activated) Temperature range operation: 0°C to +40°C charging: +10°C to +40°C storage: -20°C to +60 °C Relative humidity operation: 10 to 80%, non condensing storage: 10 to 90% Weight (headphones) approx. 238 g Magnetic field strength 1.9 mT Bluetooth Version Transmission frequency Modulation Output power Profiles Codec Bluetooth 5.0 compatible, class 1, BLE 2,402 MHz to 2,480 MHz GFSK, π/4 DQPSK, 8DPSK 12.6 mW (max) HSP, HFP, AVRCP, A2DP aptX, aptX LL, AAC, SBC HD 450BT | 31