Comfortable Fit to Your Ear and Hands-Free Talking: The lightweight designed Bluetooth headset with microphone swivels 360/270 degrees to fit all ears of all sizes. Quickly activate Siri or voice assistant for hands-free calling. Buttons at your fingertipslet you enjoy true hands-free wireless calling. Great for online meetings and safer to answer calls while driving. CVC8.0 and Ultra-Clear Voice Calls: YYK-525 mobile phone bluetooth headset has built-in omnidirectional dual microphones to block out distracting background noise and optimize your voice while providing the smoothest transmission and the most stable connection.Great, natural, clear voice for video chats, calls and classes. Ability to pair with two devices, allowing instant transition between incoming and outgoing calls. EXTREME WORK/PLAY TIME: Bluetooth headsets with microphones have been tested to support up to 10 hours of continuous talk and play time. 400 hours standby time. The wireless earphones with mic feature Type-C fast charging for 1.5 hours on a single quickcharge, allowing you to make reliable wireless calls while multitasking. Long-lasting talk and standby make the bluetooth phone headset easy to use, suitable for long meetings, long drives, sports. BLUETOOTH 5.1 AND HIGH QUALITY SOUND SOUND: Bluetooth 5.1 on this bluetooth headset with microphone provides fast, stable and lag-free connections up to 33 feet away. 10mm graphene drivers deliver crystal-clear, lifelike quality and punchy sound. Plus,the nano-coating on this speakerphone protects against everyday splashes, sweat and rain. Compatible with any iOS and Android devices, tablets, laptops, computers, and more.