Key Features
MPN: 25599-999-899
Model: Evolve2 55
Driver Unit: 28mm
Built-in microphone
Active noise-cancellation (ANC)
Sound Mode: Stereo / Mono

Frequency Range: 20Hz - 20 kHz
Sensitivity: -38 dBv/Pa
Input Jack: 1x USB Type-C
Driver Diameter: 28mm
Connectivity: Wired & Wireless
Battery Life: Music time: Up to 18 hours (with ANC off) / up to 15 hours (with ANC on); Talk-time: Up to 16 hours (with ANC/busylight off) / Up to 10 hours (with ANC on/busylight on)
Physical Specification:
Dimensions: 185mm x 65mm x 175mm / 7.28in x 2.56in x 6.89in
Weight: 130g / 4.59oz
Color: Black
Cable Length: USB cable length: 1.2m, 3.94ft
Microphone:
Frequency: Analog: 20Hz - 10000Hz; Digital: 100Hz - 6300Hz
Noise ratio: -44 dB
Sensitivity: -38 dBv/Pa (analog microphone); -26 dBFS/Pa (digital microphone)