This is a Geek Squad Certified Open Box Product. See below for more information. The α6400 packs Sony’s most advanced technologies into a compact, lightweight design. This APS-C mirrorless interchangeable lens camera introduces advanced Real-time Eye AF and Real-time Tracking technologies, and boasts an incredibly fast autofocus acquisition of 0.02 seconds. It also features 4K video recording and a fully 180-degree tiltable LCD touchscreen.