Brand Name: Lenovo Model:  Lenovo HE05X Style                            :  In-Ear Vocalism Principle:  Dynamic Control Button       :  Yes Active Noise-Cancellation: Yes Communication :  Wireless+Wired Lenovo HE05X Neckband Ear-Phone Volume Control  :  Yes Sensitivity:  92dB Max Output              :  10mW Function                    :  Sport Number Of Drivers:  2 Plug Type                  :  NONE Package List: User Manual Package List            :  Charging Cable Package List            :  Replaceable Pads Set Impedance Range:  up to 32 Ω Connectors              :  USB Earcups Type          : Semi-open Bluetooth Version:  3.0 Driver Diameter     :  10mm Waterproof:  Yes Frequency Response Range: 20 – 20000Hz With Microphone:  Yes Lenovo HE05X Neckband Ear-Phone Features                  :  waterproof Features                  :  With Microphone Features                  :  Active Noice Cancelling Charging Method:  CABLE Life time: about 12 hours