Use the latest V5.0+EDR Bluetooth technology to provide the fastest and most stable connection. Built-in microphone and beanie hat hands-free call function, so you will not miss any calls. Ultra-low power consumption, built-in 240mAh high-capacity rechargeable battery.The simple panel display of the Bluetooth beanie has 3 notification buttons and an LED indicator. Go through the basic control of pausing/playing music, you can answer calls, skip songs and control the volume. Built-in ultra-thin stereo speaker magnets and microphones provide clear and high-quality digital sound. The speakers are not fixed, you can adjust them to the best position that makes you feel comfortable.The Bluetooth beanie is the choice of most people, as a unique gift for men, women, teenage boys and girls, such as birthday gifts, Christmas gifts, men's Thanksgiving gifts. Fashionable and comfortable beanie headsets are very suitable for gym, fitness, exercise, exercise, outdoor sports, such as running, skiing, skating, hiking, camping, dog walking, vacation travel.