[RZ04-02420100-R3A1]Razer Hammerhead USB-C 

RAZER IN-EAR HAMMERHEAD ANC USB-C
Frequency response: 20 Hz – 20 kHz
Impedance: 32 ± 15% Ω
Sensitivity: 110 ± 3 dB (Max SPL)
Input Power: 10mW/20mW
Drivers: Dynamic + Balanced Armature
Connector: USB-C Connector
Cable length: 1.2 m
Approximate Weight: 21.0 g