Product description colourBusiness black, ivory white, dark green, stylish blue 1.STRONG FUNCTION & EASY OPERATION- One multi-function button to answer, reject, hang-up, redial, mute of calling, convenient for safe driving, business working. With smart functions of incoming calling number voice prompt, one to two devices connection, re-connection, active Siri/ Voice assistant. 2.Bluetooth 5.0 technology- Provides fast and stable pairing with any device that has Bluetooth function like smart phones, tablets, laptops. It can pair easily with any two Bluetooth devices simultaneously. With up to 35 hours of continuous calls and up to 365 days in standby mode.15m Bluetooth connection will not be stuck, the signal is stable and the sound quality is better. 3.WATER RESISTANT-Bluetooth headset 5.0 are waterproof and dustproof. Whether it is sweating in the gym, outdoor wind and rain, the movement is not limited, the music is endless. No fear of heavy rain and sweating. Music with me "moving", IPX5 waterproof and dustproof. 4.WIDE COMPATIBILITY & COMFORTABLE WEARING- This wireless headset Wide compatible with tablets, iPhone, Android cell phones and Various APP. 5.Painless wearing-Durable Silicone earmuffs, ergonomic radian design make stable and comfortable wearing for left or right earThe 180 headphone contour can be adjusted to fit the ears more comfortably.