HP Envy Specs

Processor Speed: 2.5 GHz* Processor Type: Apple A12X Bionic
Onboard RAM: 4 GB Storage Capacity: 64GB
Details: *Apple provides no official details regarding RAM used by the 12.9-inch iPad Pro (3rd Gen). However, third-party software analysis has determined that the 64 GB, 256 GB, and 512 GB configurations have 4 GB of RAM and the 1 TB configuration has 6 GB of RAM.
USB Support: Sync & Charge (USB-C*) Firewire Support: None
Connectivity: USB-C Ports: USB-C, Smart Connector, Magnetic Connector
Case Type: Tablet/Slate Form Factor: iPad Pro 12.9" (3rd Gen)
Housing Color: Black* Controller: Multi-touch
Built-in Display: 12.9" Liquid Retina* Display Resolution: 2732x2048 (264 ppi)
Details: *The 12.9-inch iPad Pro (3rd Gen) models have a fully-laminated 12.9" LED-backlit 2732x2048 "Liquid Retina" display (264 ppi, 600 nits brightness). Apple also notes that this display has "ProMotion" technology, which "automatically adjusts the display refresh rate up to 120 Hz for ultra-smooth scrolling and incredible responsiveness;" Wide-color (P3); and True Tone technology, which evaluates the color temperature and ambient brightness of your surroundings and dynamically adjusts the display's white balance to match. It additionally has a fingerprint-resistant oleophobic (oil repellent) and antireflectant coating (1.8% reflectivity).It has no "Home" button like earlier iPad models.

The 12.9-inch iPad Pro (3rd Gen) line also supports AirPlay Mirroring to Apple TV 2nd Gen and later models as well as provides video mirroring and video out support up to 4K using the USB-C "Digital AV Multiport Adapter" and USB-C "VGA Multiport Adapter." Adapters sold separately.  
Standard Wireless: 802.11a/b/g/n/ac (HT80)* Standard Bluetooth: 5.0
Details: *All 12.9-inch iPad Pro (3rd Gen) configurations support 802.11a/b/g/n/ac on both the 2.4 GHz and 5 GHz frequencies (dual band) as well as HT80 with MIMO. They support Bluetooth 5.0, as well.
Cell Network: Wi-Fi Only* Camera: 12 Megapixels**
Battery Type: Lithium Polymer (36.71 Whr) Battery Life (Music): 10 Hours*
Details: *Apple estimates that this 12.9-inch iPad Pro (3rd Gen) provides "up to 10 hours of surfing the web on Wi-Fi, watching video, or listening to music".
Battery Life (Voice): N/A Standby Time: N/A
Apple Order No: MTEM2LL/A* Apple Subfamily: iPad Pro 12.9" (3rd Gen - Wi-Fi)
Details: *MTEM2LL/A is the order number for the iPad Pro 12.9" (Wi-Fi Only - 3rd Gen) with 64 GB of storage in silver. 
 
In Space Gray, with 64 GB, the order numbers are 
Apple Model No: A1876 (EMC 3223*) Model ID: iPad8,5, iPad8,6**
Pre-Installed OS: iOS 12.1 Maximum OS: Current
Details: This model is fully supported by the current version of iOS 12.
Dimensions: 11.04 x 8.46 x 0.23 Avg. Weight: 1.39 lbs. (631 g)
Mac Support: OS X 10.11.6* Windows Support: Windows 7*
Audio Support: Apple reports that the 12.9-inch iPad Pro (3rd Gen) models support "AAC (8 to 320 Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320 Kbps), MP3 VBR, Dolby Digital (AC-3), Dolby Digital Plus (E-AC-3), Audible (formats 2, 3, 4, Audible Enhanced Audio, AAX, and AAX+), Apple Lossless, AIFF, and WAV."
Photo Support: N/A
Video Support: Apple reports that the 12.9-inch iPad Pro (3rd Gen) models support "H.264 video up to 4K, 30 frames per second, High Profile level 4.2 with AAC LC audio up to 160 Kbps, 48kHz, stereo audio or Dolby Audio up to 1008 Kbps, 48kHz, stereo or multichannel audio, in .m4v, .mp4, and .mov file formats; MPEG 4 video up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC LC audio up to 160 Kbps per channel, 48kHz, stereo audio or Dolby Audio up to 1008 Kbps, 48kHz, stereo or multichannel audio, in .m4v, .mp4, and .mov file formats; Motion JPEG (M JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format."
Incl. Accessories: The 12.9-inch iPad Pro (3rd Gen) models also include a USB-C Charge Cable (1 meter) and an 18W USB-C power adapter.