25 Watt Portable ---The Propagation Distance Is Up To 500m,It Is Applied To Occasions Such As Celebration Activities,Training And Marching Band; Support USB Flash Disk--- It Can Various Audio Devices Such As Mobile Phone ,,Etc,Play All Kinds Of Music; With Bottle Opening Function --- It Applies To The Celebration Activities After The Match; With Transparent Appearance--- It is Popular In The School Or The Other Outdoors; 240S Recording -In Siren ---You Can Record Sounds As Required; Collapsible Handle With Strap--- It Is Suitable For Sports Activities Such As Football, Baseball, , Camping, Boating And So On. Battery Powered Uses 4 Pieces C Batteries(Not Included). Material: plastic colour: transparent blue Package Contents: 1 x Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.