Product Description Color: Business black, ivory white, dark green, stylish blue business work. With smart features of incoming phone number prompt, one to two device connection, reconnection and active Siri/Voice Assistant. 2. 5. Bluetooth 5.0 Technology】 - Provides fast and stable pairing with any device with Bluetooth functionality such as smartphones, tablets and laptops. It can be easily paired with any two Bluetooth devices at the same time. With up to 35 hours of continuous calling and up to 365 days of standby, the 15m Bluetooth connection does not get stuck, the signal is stable and the sound quality is better. 3.【WATER RESISTANT】 -Bluetooth Headset 5.0 is waterproof and dustproof. Whether it's sweating at the gym, wind and rain outdoors, the movement is not limited, the music is endless. Don't be afraid of heavy rain and sweating. Music "moves with me", IPX5 waterproof and dustproof. 4. 【WIDE COMPATIBILITY AND COMFORTABLE WEARING】 - This wireless headset is widely compatible with tablets, iPhone, Android phones and various apps. 5. 【Painless Wearing】 Durable silicone earmuffs, ergonomic radiant design ensure stable and comfortable wearing for left or right ear， 180° headphone contour can be adjusted to fit ears.