Bluetooth Speaker with Folding Fan includes the following features : 

• Bluetooth version: 5.0 
• Build-in foldable fan on the top, provides 3 speed adjustments
• Bluetooth speaker
• Output impedance: 4Ω
• Horn output power: 3W
• Input voltage: 5V
• Operated with 1,800mAh, 18650 battery
• USB charging cable included

Material :

• ABS and silicone body

Size closed :

• Diameter of 7.4 cm x Height of 9 cm