NewRixing NR-2017 Portable Bluetooth Speaker, Support Hands-free Call TF Card FM U Disk 1. 10W high power, motherboard with boost, good sound quality 2. Built-in lithium battery 1200mAh 3. Shell rubber oil, iron mesh 4. Play time: 3-4 hours (play time varies with volume and audio content) 5. Charging time: 4 hours 6. Output power: 2 x 5W 7. Speaker: 2, external magnetic 4ohm, 5W, 52mm 8. Signal to noise ratio: about 80dB 9. Bluetooth standard: 4.2+EDR 10. Working distance: about 10 meters 11. Input voltage: DC5V (1A) 12. Product size: 42x6.8x7.3cm 13. Product weight: about 850g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.