Optimize product title: S49Pro Vehicle-mounted Wireless Bluetooth Speaker - Outdoor Waterproof

Product information:
Power type: USB
Color: Black
Product Model: S49Pro Bluetooth speaker
Number of speakers: 2
Material: ABS waterproof cloth wrapper
Speaker diameter: 57mm * 2
Standby time: 30 days
Battery capacity: Built-in 3600 mA
Power: 20W New bass is good
Playback Time: 6-7 hours
Charging time: (different Charger specifications have different time)
Communication Distance: Barrier-free 10-15 meters