Brand NYORK Model HS868 features JIELI 7018F8 Bluetooth Chipset with Bluetooth Version V5.4 and Working Distance over 10M, ANC Level -42dB, Battery Capacity 600mAh, Charging Time 2 Hours via Type-C Charging Port, Music Playing Time 20–25 Hours (ANC ON) / 35–40 Hours (ANC OFF), Speaker Driver Units Ø40±0.2mm 29Ω ± 15%, Frequency Response 20Hz–20KHz, Sensitivity 100±3dB, and 5 PCS Microphone.