OUR TOUGHEST FAMILY ROCKBOX MEMBER , ,Ready for Whatever ,POOL PARTY PROOF ,With a rating of IPX7, the Rockbox Bold L is sand, dirt and pool party proof. Don’t worry about getting it dirty, you can easily rinse your Bold under the tap. , ,TURN IT UP ,Wirelessly link two Rockbox Bold L speakers giving you stereo sound. Party harder. , ,POWERBANK FEATURE ,USB port to charge your mobile devices , ,HOOK ME UP ,Embellished with a strong, rubber label, hang it wherever you want , ,CALL ME MAYBE ,Built-in microphone and speakerphone function , ,DEEP BASS ,Passive bass woofers for impressive beats , ,PLAY TIME ,15 hours , ,CHARGING TIME ,4 hours