Ninety7 DOX Portable Rechargeable Battery Base for Amazon Echo Dot BlackUp to 10 hours of portable run time Convenient charging Dock 4 LEDs Great design with anti stain fabric Use the Amazon dot power supply and cable The Ninety7 DOX is a portable battery for the Amazon Echo Dot 2, designed to provide rechargeable, cord free mobility at home or on the go. With up to 10 hours* of cordless use, you can unplug and take Alexa anywhere you choose without the hassle of cables and outlets. Meet DOX DOX has a powerful,