Handfree Waterproof Bluetooth Li-ion Battery Speaker includes the following features :

• Line-in function
• Bluetooth function
• Power supplier: DC5V
• Frequancy: 200Hz - 18KHz
• Signal & noise ratio: ≥75dB
• Impedance: 4 OHM(Ω)
• Charging voltage: 5V
• Working voltage: 3.7V
• Battery capacity: 500mah
• Included USB cable

Material :

• ABS material housing

Size closed :

• Diameter of 8.5 cm x Height of 4.5 cm