Technical specifications * Connection type Wireless Bluetooth * Type of headphones On-ear * Type of earcups Closed * Type of mounting Headband * Bluetooth specification V4.2+EDR, A2DP, AVRCP, HFP, HSP * Operating frequency 2.402?2.480 GHz * Membrane diameter 40 mm * Sensitivity (headphones) 98 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 6 hrs * Connectors Micro-USB for charging * Material of headphones Plastic * Color Black * ROHS / CE Yes