Carry Your Party With You Wherever You Go With This Bluetooth Speaker. Packed With A Number Of Impressive Features, Including 4 Hours Of Playback Time, A Waterproof Design And Bluetooth Connectivity, This Speaker Ensures A Seamless Streaming Experience.Tf Card Music Player: Built-In Tf Card Read-Only Decoding Or Calling And Equipped With 1200 Mah Built-In Rechargeable Battery.Provides Non-Stop Entertainment For Over 4 Hours Once Fully Charged Bluetooth:- Wireless Music Streaming Via Bluetooth 2.1 Or Below. Bluetooth Range: Line Of Sight, 10M Or 30Ft,Easy To Connect By Bluetooth.