NewRixing NR2055 Wireless Portable TWS Bluetooth Speaker with Microphone 1. Bluetooth version: 5.0+EDR 2. Output power: 5Wx2 3. Speaker size: 66mmx2 4. Frequency response: 100hz-18khz 5. FM frequency band: 87MHz-108MHz 6. Input voltage: DC5V1A 7. Battery capacity: 1200mAh 8. Charging time: 3h 9. Working hours: 4-5h 10. Noise signal: above 80 decibels 11. 10W dual high-performance drivers, unique enhanced bass 12. Multi-function button control: Easily manage audio playback and call volume control 13. 10-meter wireless sound range, enjoy high-definition stereo sound 14. Using advanced technology, compatible with all Bluetooth compatible devices Packing list: Bluetooth speaker X1, audio cable X1, charging cable X1, user manual X1