1.Our wireless earbuds use Bluetooth 5.4 technology. They can be easily connected to most Bluetooth-enabled devices, including smartphones, computers, TVS and laptops, giving you a convenient and comfortable experience. 2.The product has smartwatch functions, the ability to set noise reduction levels, and the ability to find lost headphones. Its battery life will amaze you, its screen is refined and flexible, and it supports multiple languages 3.It is very suitable for everyday use, it not only has a powerful noise reduction function, it also has a high sound quality call function, it is very suitable for use in the case of leisure sports, and it is also waterproof. 4.It has an automatic connection function, you do not have to worry about the inconvenience of connection, as long as you take it out of the warehouse, you can automatically connect to your device, it is a worry object，Portable designoverall size is very small, can be easily placed in your pocket. 5.Our design fits the general ear design, and there are three sizes for you to change, there is always one that will fit your ears, and we are committed to finding a favorite and comfortable headset for you 6.Turn on the phone to connect to the Bluetooth A10 PRO, and you can use the normal functions of the headset, or you can use the MFB button on the headset to operate. 7.If you want to unlock the full functionality of the headset, you need to go into the app, connect to Bluetooth E9, and once paired, you unlock the headset's full functionality. 8.Dear customer, since our equipment was turned on when leaving the factory, there may be no Power when you received the product, you need to charge it and then long press the power button on the back to start it, but we did not provide good service here, sorry