Powerful speakers with breadth-taking strong bass and surround sound. 1*93mm + 2*66mm loudspeaker, bi-amp, passive radiators. Very long-lasting battery life for longer music play. Advanced wireless technology - perfect for all bluetooth devices. Compact & portable - easy to carry, perfect for home and outdoor events. Handsfree call ; built-in hd microphone for phone calls, voice-enabled speakerphone, one-key call button. Multiple play modes - bluetooth, aux-in, sd card, & usb drive player. Water resistant ipx5: splashproof, rainproof, dustproof, sandproof; outdoor speaker... interested call me or watssap me...