1. Material: Plastic 2. Interface type: USB 3. Battery capacity: 500 mAh 4. Frequency response range: 100HZ-20KHZ 5. Output power: 5 w 6. Signal to noise ratio: greater than or equal to 75 dB 7. Power supply: USB charging / built-in lithium battery 8. Channel: 2.1 9. Playing time: 1.5 hours 10. Bluetooth protocol: 4.1 11. Number of speakers: 1 12. Effective distance: 10 meters 13. Function: card/radio/call function 14. Play format: MP3 15. Connection method: Bluetooth connection 16. Support format: U disk 17. Dimensions: 86 x 72 x 32 mm 18. Weight: 0.2kg
