Specification:

• Material: Silicone + ABS
• Battery: 3.7V/500Mah
• Working time: 120Minutes
• Max Sound: Less than 50db
• Waterproof Grade: IPX6 Grade
• Frequency: 10 Frequencies
• Power Supply: USB charging
• Weight: 
• Size:  8.25 ” x 5.69 ” x 1.44 ”