BrandYealink Colourblack Telephone typeCorded Number of batteries1 Lithium Ion batteries required. MaterialPlastic Power sourceCorded Electric This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com The Yealink SIP-T58A is a simple-to-use smart media phone that provides an enriched HD audio and video calling experience for business professionals. This all-new smart media phone enables productivity-enhancing visual communication with the ease of a standard phone. Based on Android 5.1.1 operating system, the SIP-T58A features a seven-inch adjustable multi-point touch screen, integrated Wi-Fi and Bluetooth 4.0+ EDR. It is coupled with a built-in web browser, calendar, recorder and more, which also support the installation of third-party applications for business customization. See less Product specifications Features & Specs Item details Additional details Measurements