The Lufthansa Technik inflight entertainment system is an optional addition and consists of a high-definition video system, surround sound, multiple audio and video input options, a cabin management system, and three options for voice communications and connectivity. The cabin management system can also be accessed via iOS and Android applications. Embraer
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.