• Bluetooth version: 4.0
  
• Effective distance: 5m
  
• Rated power: 2W
  
• Rated inpedance:4Ω
  
• THD: THD<5%
  
• Battery type: Rechargeable built-in battery
  
• Lasting time: 4 hours
  
• Colour: black， grey， gold
  
• Size: 52 x 52 x 25mm
  
• Weight: 58g
  
• Package include: 1 x speaker， 1 x user manual