New Rocksteady 2 LOUD and CLEAR Portable Durable Bluetooth Speaker True 2.1 Stereo sound Integrated Speakerphone Water and Drop Resistant LOUD & CLEAR; featuring a True 2.1 Stereo Sound w/ Side-Blasting Speakers and Center SubWoofer. Bluetooth, line-in, & USB. Easily connect to your Smartphone, Tablet, or other Bluetooth Device. USB direct play of any MP3 files. 3.5mm line-in cable incl. 10+ Hours playback-Rechargeable Lithium Ion Battery Pack that is also replaceable (no tools required). Sleep Mode (up to 15 days standby). Extra battery packs sold separately offering extended play time. Speakerphone; Front Controls (Skip track, Play/Pause); Connect 2 Phones at the same time & toggle control; Integrated mount point for optional accessories (Bar mount - Bikes, roll bars, etc., Flat Surface Mount -walls, etc., and other mounts) Water & Splash Resistant - Featuring water-safe material and electronics protected by Liquipel'spatented Nanotechnology coating - designed to repel moisture without compromising sound quality or speaker performance. Shock and Drop Resistant - Lightweight and durable, solid Aluminum enclosure surrounded by a protective Skin; vibration resistant to deliver superior Clarity.