PORTABLE SPEAKER- Lightweight and mini-sized body fits perfectly in your hand. Perfect for outdoors and indoors, such as home, dorm, kitchen, bathroom, car, parties, travel, sports, etc. PLUG AND PLAY- The mini speaker of music supports all common rates of MP3 format, TF card and U disk can be inserted. Micro SD/TF memory card supporting FAT16/FAT32 file system EXCELLENT SIGNAL- Built-in high sensitivity FM radio frequency module, Duration frequency response range 150-18000Hz (3dB). Support headphone output WELL ENDURANCE- Built-in 600mAh battery, which can last up to 2-5 hours of playtime (actual playtime depends on volume size) Description: This mini speaker music player is a perfect portable speaker for outdoors and indoors. Mini size lightweight body fits perfectly in your hand, which is very convenient to carry. Don't miss it! Specification: Music format: support all common rates of MP3 format Support headphone: support headphone output Power specification: DC5V (USB power adapter or computer USB charging) Lithium battery specification: 600mA< /p> Endurance: Actual playback time depends on volume size Frequency Response Range: 150-18000Hz (3dB) Storage Media: Micro SD/TF memory card supporting FAT16/FAT32 file system SNR:&gt; 85dB Output Power: RMS 3Wx2 THD=10% Color: Blue Size: 5 x 5 x 5.2cm/1.97 x 1.97 x 2 inch Package Weight: 150g Quantity: 1 pc Package Included: 1 x Mini Speaker Music Player Note: 1. Please allow 1-3mm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as the standard.