Outdoor/ Indoor Waterproof Bluetooth Speaker for iPhone Pocket Sized Wireless Travel Bluetooth Speaker , Waterproof Shockproof Dustproof Damage Resistant Powerful Sub Woofer Produces Rich Stero Sound in Crisp High Definition (high def) Optimized for Outdoors: Experience remarkable audio with the BV350TM mini. It packs remarkable wireless audio into a rugged IPX4 weatherproof frame-perfect for trails, beach, snowStudio Quality at Home Office , Indoors and Out. Smartphones MP3 Players Cell Phones computers eBook Reader Wearable Technology Tablets Hour and Hours of Battery Life Quick Rechargeable Battery Loud Enough to Hear in the Bathroom Shower