Jabra Evolve2 65 MS Wireless Headphones with Link380a, Stereo, Black - Wireless Bluetooth Headset for Calls and Music, 37 Hours of Battery Life,...

Jabra Evolve2 65 MS Wireless Headphones with Link380a, Stereo, Black - Wireless Bluetooth Headset for Calls and Music, 37 Hours of Battery Life, Passive Noise Cancelling Headphones Wireless Type: Link 380 BT adapter Power Source: Rechargeable lithium ion battery Operating Time: Up to 35hrs (with busylight off) / Up to 24hrs (with busylight on) Distance: Up to 30m/Up to 100ft Headphone Frequency Response: 20Hz-20KHz Headphone Sensitivity: 117dB @1mW-1kHz Microphone Frequency Response: 100Hz-8KHz Microphone Sensitivity: -26 dBFS/Pa