Vintage Bluetooth Speaker includes the following features : 

• Bluetooth version: V5.0
• Wireless transmission range: 10M
• Battery capacity: 500mAh
• Built-in voltage: 3.7V
• Normal volume playback: 3 hours
• Charging voltage: 5V/500MA
• With sound plus
• Type-C charging port
• TF card port

Material :

• ABS housing

Size closed :

• Length of 11 cm x Width of 5 cm x Height of 7 cm