DEFENDER WIRELESS STEREO HEADSET BLUETOOTH HEADPHONES FREEMOTION B520 black blue

Technical specifications * Compatibility Windows 2000/XP/Vista/7/8/10, Mac OS X10 * Connection type Wireless Bluetooth * Type of headphones Full-size on-ear * Type of earcups Closed * Type of mounting Headband * Bluetooth specification V4.2 + HSP, HFP, A2DP, AVRCP * Operating frequency 2.402–2.480 GHz * Membrane diameter 40 mm * Sensitivity (headphones) 100 dB * Sensitivity (microphone) 32 dB * Frequency response (headphones) 20–20000 Hz * Frequency response (microphone) 20–16000 Hz * Operation range 0–10 m * Continuous talk / listening period 7 hrs * Connectors 3.5 mm jack, Micro-USB for charging * Material of headphones Plastic * Color Blue * ROHS / CE Yes