Features: With FM function; With Hi-Fi speaker, to make sure the clear and bright sound; Support Micro SD card and USB card, play MP3 format audio; Support AUX ; Under the BT disconnection mode, device will be auto power-off within half hour; Package Includes: 1x Bluetooth Speaker,1x Charger Cable,1x AUX Cable,1x User Manual; Product Specifications: Bluetooth V5.0; Working Distance: 10M; Battery: 3.7V 1200mah; Normal Volume Playing time: 3H~4H; Frequency response: 120HZ-20KHZ; Unit Size: 68.8x68.8x160mm; Charging: 5V/500MA;