Please note that this A2220 iPhone 11 Pro Max is compatible with FDD LTE bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 66, and 71 as well as TD-LTE bands 34, 38, 39, 40, 41, 42, 46, and 48. It does not support bands 14, 21, 28, 32, and 71. It is sold only in mainland China and Hong Kong. It is technically compatible with carriers in just about all countries, but it does not support Apple SIM or eSIM.

All iPhone 11 Pro Max models have a haptic-touch capable 6.5" (diagonal) OLED "Super Retina XDR" display (2688x1242, 458 ppi, 2,000,000:1 contrast ratio) that occupies nearly the entire front of the device. It has four cameras. On the front -- tucked in the "notch" -- is a "TrueDepth" camera that in addition to supporting "Advanced Face ID" identification functionality, takes 12 megapixel photos, shoots 4K video, and has software support for Portrait mode, Portrait lighting, and more. The rear packs three 12 megapixel, 4K video-capable cameras -- a Ultra Wide (f/2.4 aperture, 120-degree field of view), Wide (f/1.8 aperture), and Telephoto (f/2.0 aperture) cameras. In addition to improvements on HDR and portrait mode offered by earlier iPhones, the iPhone 11 Pro also adds a Night Mode.

The iPhone 11 Pro Max uses a stainless steel case and has a glass front and back. It is splash, water, and dust-resistant to the IP68 standard (maximum depth of 4 meters up to 30 minutes). It is offered in four color options -- Gold, "Space Gray," Silver, and "Midnight Green."

Internally, the iPhone 11 Pro Max is powered by a 64-bit, 7 nm 2.66 GHz "Apple A13 Bionic" processor with six cores -- two performance cores and four high-efficiency cores -- and a "third-generation Neural Engine." It has 4 GB of RAM and 64 GB, 256 GB, or 512 GB of flash storage. It also supports 802.11ax Wi-Fi 6 with 2x2 MIMO, Gigabit-class LTE with 2x2 MIMO, Bluetooth 5.0, Ultra Wideband "for spatial awareness," NFC for Apple Pay, "Express Cards with power reserve" for compatible transit systems, and dual SIMs (two hardware nano SIMs for this A2220 model).

Apple estimates that the iPhone 11 Pro Max provides "up to" 80 hours of audio playback, 20 hours of video playback, and 12 hours of streamed video playback. It supports "wireless" (inductive) charging, too (Qi).

In mainland China, it originally cost RMB 9,599, 10,899, and 12,699 with 64 GB, 256 GB, and 512 GB of storage, respectively. In Hong Kong, it originally cost HK$9,499, HK$10,799, and HK$12,499, respectively. Discounts were available for trade-ins and a variety of payment plans were offered by different carriers, as well.
https://everymac.com/systems/apple/iphone/specs/apple-iphone-11-pro-max-china-hong-kong-a2220-specs.html