GMB-Audio Bluetooth-Stereo-TWS in-ears' - TWS-ANC-MMX
-Interface: Bluetooth v 5 pin code 0000.
-Bluetooth frequency range: 2402 2490 MHz.
-RF output power: 4 dBm.
-Supported profiles: HSP HFP A2DP and AVRCP.
-Recharging time: up to 2 hour USB Type-C p.