The perfect combination of sunglasses and bluetooth headsets, ergonomically designed sunglasses fit all face shapes. 2、The frame is heat and cold resistant, flexible and durable, with high strength, suitable for wearing without fatigue for a long time. 3、Intimate voice tips help you to easily operate, drive, travel, outdoor and other perfect choice. 4、Polarized lenses, offers anti‐glare and ultraviolet protection, smart noise reduction function, offering you clearer and smooth conversation. 5、With high data transfer speed, stable connection and low power consumption.