5.8 -mm drivers with Dual Layer (TPU+PEEK) diaphragm for clear alto and powerful bass ^^ Bluetooth v 5.2 for seamless and stable connection and Airoha chipsets for ultra-low power consumption for longer use on a single charge ^^ up to 33-ft. operating range ^^ 4 MEMS microphones made with ECNR (Echo Cancellation Noise Reduction) technology by intelliGo AI reduces noise to provide crystal clear call quality ^^ Ambient sound mode so you can listen to music while being aware of your surroundings