Manufacturer Specifications

• Primary Function: Hamburger Mini Speaker
• Input: 3.5mm audio jack; USB power
• Speaker Specifications 
  - Loudspeaker Output 2.4W 
  - SNR > 89db 
  - Speakers: D36mm 
  - Frequency Response: 100hz to 20Khz 
  - Signal-to-Noise Ratio: > 89dB 
  - Distortion: < 0.5%
• Play Time: 4 to 6 hours with full charge
• Power Source: USB
• Battery Specifications 
  - Battery Type: Internal rechargeable Lithium Ion battery 
  - Battery Voltage: 3.7V 
  - Battery Capacity: 300mAh 
  - Battery Charging Voltage: 4.2V 
  - Charge Time: DC(±2.5 hours); USB (±4 hours)
• Dimensions: Diameter: 53mm; Height: 56mm