Fangrui Product Details 1. Car Visor Bluetooth Hands Free 1 To 2 Large Volume Car Phone Speaker 2. Charging Time: About 2h 3. Usage Time: About 30h 4. Battery Capacity: 1000mah 5. Bluetooth Version: 5.4 6. Bluetooth Receiving Distance: 10m 7. Fm Transmitting Distance: 10m 8. Speaker: 4 Ohm 3 Watt 9. Material: Abs 10. Weight: About 83g 11. Size: About 12.3 X 5 X 2cm 12. Features: 13. Built-in 4 Ohm 3 Watt High-quality Subwoofer Hd Speaker, Chinese And English Voice Prompts 14. Multi-function Digital Display, Display Frequency, Power, Volume, Number Of Songs In Tf Card 15. Fm Transmitting Function, Car Radioand Other Radios Can Receive The Signal Transmitted By This Machine 16. Card Reader Transmission, Connect The Computer With A Transmission Line To Read The Card And Transfer Files 17. Connect The Computer With A Transmission Line And Use It As A Computer Speaker 18. Bluetooth Multi-point Connection Technology, One To Two, Can Connect Two Mobile Phones At The Same Time, Support All Audio Playback Of Mobile Phones 19. Supports Tf Card To Play Music, And Can Play Music Without Connecting To A Mobile Phone 20. Type-c Charging Port, Supports Charging, Computer Connection, Audio Input, And File Transfer 21. Bluetooth Version 5.4, Lower Power Consumption, Faster Transmission 22. Built-in 1000mah Battery, Continuous Music Playbackcalls For About 30h, Voice Prompt When Low Battery, Can Be Used While Charging