TWS Wireless Bluetooth speaker

Item Details: 

• Interface type: USB
• Battery capacity: 4400 Ma
• Frequency response range: 40Hz-20KHz
• Output power: 12W
• SNR: ≥ 70dB
• Power supply mode: built in lithium battery
• Vocal tract: 2.1
• Duration: 12 hours
• Bluetooth protocol: 4.2