TCL Over-Ear Bluetooth Headset, HRA, slim fold, Frequency of response: 9-40K, Sensitivity: 100 dB, Driver Size: 40mm, Impedence:
TCL ELIT400BT Cement GrayWireless Over-ear Headphones Hi-Res audio 40mm speaker drivers 30 hours play time 15 mins fast charging for 6 hours play Precise detail and balanced sound Memory foam cushion Slim fold design Additional aud