Features:

• Speaker: φ40MM*3W*2 (4Ω)
• Power: USB 5V usb 
• Frequency response: 200Hz-12khz
• product weight: 420G  

Packing:

• Carton Size: 790*470*500mm
• CTN: 50pcs
• NW: 20kgs
• GW: 23kgs