32 | HD 4.40BT
Specifications
Specifications
HD 4.40BT
Ear coupling closed, circumaural
Frequency response 18 - 22,000 Hz
Transducer principle dynamic
Sensitivity (microphone) 100 - 10,000 Hz
Sound pressure level (SPL) 113 dB (1 kHz/ 1 V
rms
)
Impedance 18 Ω
THD (1 kHz, 100 dB) < 0.5 %
Pick-up pattern dual omni-directional microphones
Input power 3.7 VDC, 600 mAh: built-in rechargeable
Lithium-Polymer battery
5 VDC, 400 mA: USB charging
Operating time 25 hours
Charging time approx. 2 hours
Weight approx. 225 g
Battery Lithium Polymer
Connectivity Bluetooth version 4.0/NFC pairing
Audio cable
(optional/detachable)
1.4 m audio cable, 3.5 mm angled plug,
gold-plated
Connector USB charging cable
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