Superior sound performance: Harman Kardon's unrivaled acoustic engineering delivers rich, room-filling sound in any setting, whether you're listening to your favorite music or making crystal clear conference calls. Elegant design: Crafted from premium materials, the Onyx Studio 8 neatly blends into your life and home. The sleek, anodized aluminum handle, which doubles as a sturdy base, means you can easily carry it from one room to another. Self-Tuning: Enjoy perfect sounds wherever you take the music. When you power on, the Onyx Studio 8 automatically calibrates to its environment, ensuring the best sound possible no matter where you set it down. Bluetooth streaming for up to 8 hours: The Onyx Studio 8 pairs seamlessly with any Bluetooth device for enhanced, extraordinary audio. And since music is meant to be shared, you can switch your playlists with anyone by simultaneously connecting two devices to the speaker. With 8 hours of battery time and no power cord tying you down, you can place the Onyx Studio 8 anywhere and get on with the music. Eco-friendly materials: The Onyx Studio 8 is made with recycled plastic. The speaker grille fabric is woven from recycled polyester yarn, and our paper-based packaging is made with FSC-certified paper and printed with soy ink. Together, these choices reduce environmental impact. This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.