JBL Original Pro Sound: Provides epic sound all day with monstrous bass Up to 24 Hours of Playback: Listen all day with a built-in, rechargeable Li-ion battery that supports up to 24 hours of playtime; 6.5 hours charging time Bluetooth V5.3: With Bluetooth v5.3 wirelessly connect up to 2 smartphones or tablets to the Boombox speaker and take turns enjoying JBL Original Pro sound JBL PartyBoost: Pair with two JBL PartyBoost-compatible speakers for stereo sound or link multiple JBL PartyBoost-compatible speakers to pump up the party IP67 Waterproof and Dustproof: Take the speaker to the beach or the pool without worrying about spills, rain or even a tumble in the pool Built-in Power Bank: The JBL Boombox 3 has a 10,000mAh Li-ion polymer battery, you can charges smartphones and tablets via USB even while music is playing Sound quality that's built to last: The Boombox 3 is anchored by a solid build, with features including a metal handle, waterproof materials, and silicone grips.