1. Bluetooth version: 4.0
2. Bluetooth receiving distance: about 10m
3. Audio source: TF, AUX, Bluetooth, FM Radio
4. Power supply: DC5V/0.5A
5. Output power: 3W
6. Battery capacity: 500mAh
7. Frequency response range: 180Hz-18KHz
8. Expansion storage: 4GB
9. Signal-to-noise ratio: above 80dB
10. Interface: USB
11. Size: about 14.3x7.4x2.2 cm
12. Weight: about 138g

Features:
1. Small and convenient, can be easily put in your pocket
2. Using passive dual-nan membrane resonance technology, natural and lifelike full-frequency music
3. Dazzling luminous light circle, flashing synchronously with music when playing music
4. It can be used as a mobile phone holder to watch movies without blocking subtitles, and the depth of the groove just fits the phone
5. With lanyard design, easy to carry