Function Buttons: on/off, menu, previous song, next song, play/pause, volume control LED Display Panel. Built-in high-capacity rechargeable battery, supports long playback time. Compact and portable, convenient to carry. Specifications: Interface Type: USB, AUX Speaker Type: Mini Playback Function: Radio, MP3 Material: Aluminum Memory Card Support: Yes Display Screen: Yes Audio Classification: Mini Cabinet Material: Metal App Support: No Apt-x Support: Yes Special Feature: Wireless, Portable, Mini Remote Control: No Speaker Type: Surround Type: Passive Specifications: Material: Aluminum Alloy Power Source: Li-ion Battery / DC5V SNR: over 80dB Music Format: MP3 Size: 50*50*50mm 1、Made of high-quality fluorescent surface aluminum alloy, elegant and stylish in appearance. 2、 Great sound quality lets you enjoy your favorite music 3、 Supports Security Digital Memory Card, TF card, USB disk, FM, etc. 4、 Supports Line IN function, receiving the audio source from MP3, MP4, PC, laptop, phone, etc. 5、 Supports USB2.0 high-speed transmission, fully compatible with USB1.1.1 x Mini Portable USB Speaker 1 x 3.5mm Audio Cable 1 x USB Charging Cable