• Speaker diameter: Φ40mm                                                                        
• Impedance: 32 ohms                                                                      
• Sensitivity: 105±2dB                                                                                 
• Frequency response: 20Hz-20,000Hz       
• Max. input power: 30mW                                                              
• Rechargerable lithium battery inside                                    
• The world of high-quality music                                                              

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