Specifications Memory Card Type: Micro SD / TF, U disk(not included) Max Extended Capacity: 32GB Media Format: MP3 Total Power: 3W Impedance: 4ohms Interface: USB 2.0 / TF slot / 3.5mm / Mini USB Radio: FM Radio Power Supply: Built-in Rechargeable Battery Built-in Battery: 600mAh Other Features: 1.0"LCD display screen Certification: CE FM Frequency: 87.5~108MHz Size: 50*50*52cm Fuction Completely clear in sound quality and scratch resistant in characters. FM function: it can search the radio broadcast station automatically. Micro SD/TF card slot design: it is able to read the data and storage music files from inserting TF card directly. Support U disk playing mode: automatically read the audio files from inserting U disk or USB connection devices. LCD display: with a small LCD screen to show the working mode. LED indication: blue light lights on when the speaker is working. Compatible with all devices with 3.5mm interface. Aluminum alloy shell, durable yet stylish. Compact in size, multiple in color and attractive in appearance. Suitable for both indoor and outdoor use. packing list 1 x Mini speaker (not include sd card) 1 x Power cable 1 x Audio cable Order Tips It doesnt come with Micro SD/TF or U disk, which you need to buy separately. nstruction manual 1.How to Use Radio Function Turn on. Turn on the antenna of the radio Press play /pause button to search program. Until it stops searching,need receive all the radio program. Next,press previous song, next song,you can choose your favorite program. 2.How to control volume? After the radio stop searching, Then long press previous song/next song button,you can control the volume. 3.How to change Radio /speakers mode Turn on. Next,press the mode switch key 4.For the battery For the built-in battery,it need charge about 1 to 1.5 hours,so you can use it about half hour. Please pardon the items Found no electricity after receiving because it has experienced about 39-60 days