Features: 7 LED backlight makes it easier to be used at night. One button to answer, hang up, or re-dialing calls. Supports voice assistants for voice guidance like making calls or driving directions. QC3.0 USB port and PD port for recharging devices quickly. The other USB port for normal charging or reading U disk. Enjoy music in your USB flash driver or music on phones via BT and FM connections. And it will provide lossless acoustic quality for music. Compatible with most phones in the market.