Terrain Mini is a portable speaker that packs a punch. Great for hikes tailgates bonfires and more. IPX7 Rated waterproof makes it safe for the beach or pool. Passive radiators support a powerful bass punch. Up to 14 hours of continuous playtime on a single charge. Skullcandy Multi-Link - connect up to 99 compatible Skullcandy speakers. 48mm Driver diameter. Sound pressure level: 85dB. Dimensions: 4.1" x 3.5" x 3.5". Includes: 3ft USB-C charging cable. Wrist strap.