If you have an app, you can download it according to the purchase instructions. Headphones: Don't worry, EPZ brand was born on 20 19. It is a brand developed by Shenzhen Jiuzhou Electronics Co., Ltd. for several years, focusing on high-end customized headphones and ergonomic Bluetooth headphones. Wireless Bluetooth is a wireless communication technology. Using Bluetooth technology, wireless Bluetooth can effectively simplify the communication between mobile communication terminal devices such as handheld computers, notebook computers and mobile phones, and can also successfully simplify the communication between these devices and the Internet, thus making the data transmission between these modern communication devices and the Internet faster and more efficient, and broadening the road for wireless communication. EPZ headphones are handmade, integrated with fashion concepts, selected harsh materials, and rely on sincere attitude and cutting-edge technology to raise the details and instant feelings of sound to a new height, bringing customers a surprise experience. EPZ brand has built an all-inclusive team since its inception, integrating technical talents in acoustics, structure, software and hardware engineering, and constantly exploring the magic of the sound world, so that the personalized comfort of customized headphones and the portability of Bluetooth headphones can not only achieve high fidelity, but also reflect the expansion of sound appeal and be convenient to carry. EPZ brand is committed to the customization of high-quality headphones, constantly introducing epoch-making headphones and becoming the representative brand of high-end headphones in China.