FiiO FW5 TWS 1Dynamic + 2BA Drivers Fully Integrated HiFi TWS Earbuds FEATURES ◉ Independent AK4332 DAC chipset. ◉ Premium QC5141 Bluetooth Chipset. ◉ Three-Driver Hybrid Configuration. ◉ 1 DD+2BA Drivers Per Side. ◉ High-Quality DLC Diaphragm With PU Gasket. ◉ IPX4 Water Resistance. ◉ Four Physical Buttons. ◉ Supports High-Resolution Bluetooth Transmission Protocols Such as LHDC, AptX Adaptive, etc. ◉ LED Indicator Lights on Charging Case. ◉ Long Battery Life (7 hours with the Earbuds, Up to 21 Hours with the Charging Case). ◉ Dual Microphone cVc ◉ Noise-Cancelling Microphone Technology.