Calus Wonder Boom 8 Portable Bluetooth speaker
Key Features

• Wireless standard:5.1
• Transmission distance: 10 meters
• Output power: 7W
• Play time: 4H
• Frequency effect: 100Hz~ 10KHz
• Speaker: 52 mm, 2 27 W Input Power: 5V =-=1A
• Maximum current consumption: 2.8A
• Battery type: 18650 Li-ion 1200mAh