The short take is that if it has 15 speakers, it has the Deluxe Technology Package. The Strafford Burl trim is another indicator.
2015 Infiniti QX80 Press Kit: Overview
Leading the changes to the 2015 Infiniti QX80: The new Deluxe Technology Package includes Adaptive Front lighting System, semi-aniline seating, Hydraulic Body Motion Control system, Advanced Climate Control System, Blind Spot Intervention®. A new burl trim, Strafford Burl, is added to the new Deluxe Technology Package. Also available is the Bose® Cabin Surround® sound system with 15 speakers, which is part of the Deluxe Technology Package.
The Deluxe Technology Package now includes Blind Spot Intervention® (BSI), Lane Departure Warning (LDW) and Lane Departure Prevention (LDP). As in previous years, the comprehensive package also offers Front Pre-Crash Seatbelts, Bose® Cabin Surround® sound system with 15 speakers, Hydraulic Body Motion Control system, climate-controlled front seats, semi-aniline leather seating surfaces, the Stratford Burl trim, 2nd row footwell courtesy lights, Advanced Climate Control System (ACCS), chrome mirror caps, Adaptive Front lighting System (AFS) with auto-leveling headlights and headlight washers.
The Predictive Forward Collision Warning (PFCW) system warns the driver of risks that lie beyond the driver's forward field of vision. It not only can sense the relative velocity and distance of a vehicle directly ahead, but also of a vehicle traveling in front of the preceding one. Also added are standard 3-Blink one-touch turn signals.