This product is either discontinued or we cannot get that from suppliers.
Frequency Response: 20 Hz – 20 kHz, Impedance: 32 OHM (1 kHz), Sensitivity: 96 dB (1 kHz), Driver Size - Diameters (Mm): 50 mm, Earcups: Oval Ear Cushions, Connection Type: USB-A, 02 Years Limited Warranty, RZ04-03770100.