Product Details:-Loudspeaker : 3 inch x 1.-Output power : 5W.-Frequency Response : 60hz - 18kHz.-Relationship single-noise : ≥80db.-Battery : Built-in rechargeable battery.-Power Supply Voltage : 0.5A DC5V/USB.Barrel Hand SpeakerSKU: 4-BS024Add to WishlistMOQ : 20 Pieces Dispatch Time : 1 - 3 Days