Built-in Bluetooth A2DP Technology. Plug and Play music directly from your music device. Micro SD Slot - access music files stored on your memory cards. High sensitivity MIC for voice calls. Plays radio. Built-inblue-toothfeatures two 1. 5 full-range drivers for a superior listening experience. You canconnect nearly any audio source including smartphones, tablet, PCs, laptop, and MP3 players or play music directly from a USB flash drive or SD memory card. It also features a built-in FM radio.