OtterBox Symmetry Folio Case for 13" iPad Pro in Thunderstorm Internal memory type___DDR3L 29 W Energy efficiency scale 29 W Energy efficiency scale A to G Energy efficiency class (SDR) D Energy consumption (SDR) per 1000 hours 14 kWh Packaging content Quick start guide Yes Cables included AC 7 million colours Native aspect ratio 16:9 Maximum refresh rate 240 Hz sRGB coverage (typical) 1264% Adobe RGB coverage 937% HD type Quad HD Display technology LED Contrast ratio (dynamic) 80000000:1 Viewing angle Scratch resistant Pen loop Yes Closure type Magnetic closure Number of stand modes 2 Stand mode Yes Built in speaker(s) No Brand compatibility Apple Product main colour Grey Symmetry Series Folio is an ultra slim clear folio case designed to protect your tablet against drops and scratches and its clear back makes it easy to identify engravings and asset tags