Defender FreeMotion B660 (SD-card, Bluetooth)

Connection type	Wireless Bluetooth
Type of headphones	In-ear
Bluetooth specification	V4.2 + HSP, HFP, A2DP, AVRCP
Operating frequency	2.402–2.480 GHz
Membrane diameter	10 mm
Sensitivity (headphones)	90 dB
Sensitivity (microphone)	42 dB
Frequency response (headphones)	20–20000 Hz
Frequency response (microphone)	20–16000 Hz
Operation range	0–10 m
Continuous talk / listening period	5 hrs
Connectors	Micro-USB for charging
Color	Black
ROHS / CE	Yes

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