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Specifications
Specifications
Model: HD 250BT
Wearing style
Ear coupling
Transducer principle
Transducer
Frequency response
Sound pressure level (SPL)
THD (1 kHz, 100 dB SPL)
Microphone principle
Microphone frequency
response
Microphone pick-up pattern
(speech audio)
Power supply
Charging time of
rechargeable battery
Operating time
Temperature range
Relative humidity
Weight (headphones)
Magnetic field strength
Bluetooth
Version
Transmission frequency
Modulation
Output power
Profiles
Codec
Bluetooth® on-ear
on-ear
dynamic, closed-back
32 mm
20 Hz to 22,000 Hz (-10 dB)
110 dB (1 kHz/0 dBFS)
< 0.3 % (1 kHz, 100 dB SPL)
ECM
100 Hz to 10,000 Hz
omni-directional
(1 microphone)
built-in rechargeable lithium-polymer
⎓,
battery: 3.7 V
190 mAh
⎓
USB charging: 5 V
, 120 mA max.
approx. 3 hrs
25 hrs (music playback via SBC) with
headphones' rechargeable battery
operation: 0 °C to +40 °C
charging: +10 °C to +40 °C
storage: –20 °C to +60 °C
operation: 10 to 80 %, non condensing
storage: 10 to 90 %
approx. 125 g
1.6 mT
Bluetooth 5.0 compatible, class 1, BLE
2,402 MHz to 2,480 MHz
GFSK, π/4 DQPSK, 8DPSK
10 mW (max)
HSP, HFP, AVRCP, A2DP
aptX, aptX LL, AAC, SBC
HD 250BT | 25
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