X7 Outdoor Portable Dual Speaker Wireless Bluetooth Retro Portable Speaker 1. Stereo series, shocking double bass 2. Large-capacity battery, long-lasting battery life 3. 3D stereo sound, TF card playback, TWS interconnection, AUX wired connection, FM radio, smart compatibility 4. Built-in high-definition speaker, hands-free calling 5. Key operation, clear at a glance 6. Bluetooth 5.0 chip, fast connection, stable transmission, low power consumption 7. Waterproof grade: IPX 2 8. Input voltage: DC 5V 9. Input current: 1A 10. Output power: 8W x 2 11. Battery capacity: about 1200mah 12. Power supply mode: USB charging built-in lithium battery 13. Playing time: about 8 hours 14. Charging time: 2-3 hours 15. Frequency response range: 40-20000Hz 16. Bluetooth version: 5.0+EDR 17. Number of speakers: 2 18. Function: card, radio, dustproof, voice prompt, call function 19. Signal-to-noise ratio: greater than or equal to 75dB 20. Transmission range: 10 meters 21. Packing list: speaker + hand strap + manual + charging cable + audio cable + packing box 22. Size: 16.5x7x9cm 23. Weight: about 630g