Features: Built-in FM radio. Support PC MP3 MP4 other mobile phone by connecting with 3.5mm jack. Simple and easy to operate. Built-in lithium battery, suitable for any occasion, such as outdoor activities, travel, hiking, climbing, etc. Model: Z-12 Design: Cool, Fun, Mini, Portable Supports: Volume Control, TF Card Music Playing, Loudspeaker Functions: Stereo, Songs Track Compatible With: MP3, MP4, Mobile Phone Connection: Wired Interface: Micro USB, 3.5mm Audio, TF Card Slot Audio Source: Electronic Products with 3.5mm Plug, TF/Micro SD Card, Electronic Products with USB port Colour: Purple/Black/Silver/Red/blue/Rose Red Freq: 20Hz-20KHz S/N: 45dB Power Source: USB, Battery Charging Voltage: DC 5V Power Output: 3W Product Size (L x W x H): 5.3 x 5.3 x 5.0 cm / 2.1 x 2.1 x 2.0 inches Included: 1 x Speaker 1 x USB 2 in 1 line(charge+audio)