SpecificationsMemory Card Type: Micro SD / TF, U disk (not included)Max Extended Capacity: 32GBMedia Format: MP3Total Power: 3WImpedance: 4ohmsSignal to Noise Ratio(SNR): 80dBSensitivity: 15dB +/- 3dBChannels: 2Interface: USB 2.0 / TF slot / 3.5mm / Mini USBRadio: FM RadioPower Supply: Built-in Rechargeable BatteryBuilt-in Battery: 600mAhOtherFeatures: 1.0" LCD display screenCertification: CEFM Frequency: 87.5~108MHzSize: 5*5*5cmFeaturesCompletely 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 list1 x Mini speaker1 x Power cable1 x Audio cable