Apple Watch Series 8 (Hermes, China, 45 mm) Specs

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Apple Watch -A2858 – MNNW3CH/A

About this Apple Watch

Apple introduced the Apple Watch Hermes Series 8 on September 7, 2022. This model is exclusively available in mainland China, Hong Kong, and Macau. This latest model shares several features with the previous Apple Watch Series 7. It also includes enhancements such as a temperature sensor and crash detection capability. The Apple Watch Hermes Series 8 also has an Always-On screen and the latest health monitoring features. This model also comes with custom packaging, model-specific watch faces, and software adjustments. To fully utilize the device’s capabilities, it must be connected to an iPhone 8 or later that runs on iOS 16.

This Apple Watch Hermes Series 8 model boasts a 1.9-inch LTPO Always-On Retina display that utilizes OLED technology for exceptional picture quality, including deep blacks and high contrast. The case size is 45 mm with a touch-sensitive display with a resolution of 396 x 484 and a brightness level of 1000 nits. Its rounded edges give it a display area of 1143 square mm. The display is covered with a sapphire crystal cover for protection against scratches. It also has a ceramic and sapphire crystal back that connects to the charger.

This device also has 1 GB of RAM and 32 GB of flash storage, and a Digital Crown with haptic feedback for easy navigation on the small display. According to Apple, the watch’s battery life is approximately 18 hours, depending on usage.

This Apple Watch model comes in two housings: Silver Stainless Steel or Space Black Stainless Steel, and various band options.

Apple S8

1 GB

32 GB

18 Hours

Storage & Memory

This Apple Watch model features 1 GB onboard RAM with 32 GB flash storage capacity.

Screen Size and Resolution

This model has a 45 mm case size with a 1.9-inch Always-On Retina LTPO OLED display. The display of this device delivers a resolution of 396 x 484 pixels with a display area of 1143 square millimeters. The display also has rounded corners for a sleek and modern look. Additionally, the display boasts a brightness of 1000 nits, making it easily visible in a variety of lighting conditions. This model features a Sapphire crystal cover for added durability.

OS & Processor

This model’s 64-bit dual-core S8 processor enables quick and effective processing of all the device’s tasks. System In Package (SIP) architecture was used in the processor’s design to help reduce power consumption and enhance performance.

This Apple Watch comes with watchOS 9 (20R361) pre-installed on it. Additionally, it is fully compatible with the most recent version of watchOS.

Battery

A built-in Li-Ion rechargeable battery powers this device. Apple estimated that the battery life of this Apple Watch is 18 hours, depending on how it is used. It can be extended to up to 36 hours by enabling Low Power mode.

Size and Weight

This Apple Watch weighs 1.82 ounces (51.5 grams), measuring 1.77 inches in height, 1.50 inches in width, and 0.42 inches in depth.

Inclusive Features:

Display is the high definition LCD, 6.1 inches and resolution is 1792×828, 326 ppi
Haptic touch
3 cameras with Wide and Ultra Wide field of view (120 degrees)
Front camera is tucked in a notch
12MP pictures and 4K video shooting
1.8 and 2.4 aperture and optical image stabilization
HD 1080p video recording at 25,30, and 60 fps and slow motion support
Night mode operation ability
iPhone 11 model A2221 Apple A13 Bionic 64-bit processor with six cores running on 2.66GHz
4 GB of RAM and up to 256 GB of flash memory
Dual-SIM cards (1 eSIM and 1 nano-SIM ).
Fast charge capable lithium-ion battery with wireless charging possibility
Small size and weight (only 6.84 Oz)
Face and speech recognition including various software support
Supports carrier bands in many countries around the Globe
Wifi and Bluetooth communication
Headphone accommodation and conversation boost feature
Sound recognition and notification for specific sounds
Assistive listening feature for loud places and environments
Apple pay and purchase ability
NFC with reader mode
The unit is protected from water, dust and is splash resistant

Introduction Date: September 7, 2022					Discontinued Date: N/A
Processors					Memory
Processors		Dual Core			Onboard RAM	1 GB
Processor Speed		N/A			Storage
Processor Type		Apple S8			Capacity	32 GB
Connectivity Details					Song Capacity	N/A
USB Support				N/A	Photo Capacity	N/A
FireWire Support				N/A	Description
Standard Wireless				802.11b/g/n 2.4/5 GHz	Case Type		Watch
Standard Bluetooth				5.3	Form Factor		Apple Watch Series 8 (45 mm)
Cell Network				N/A	Housing Color		Aluminum
Battery Details					Controller		Digital Crown
Battery Type	Lithium Ion				Apple Order Number		MNNW3CH/A
Battery Life	18 Hours				Apple Subfamily		Watch Series 8 45 mm
Stand by Time	N/A				Apple Model Number		A2858 (EMC 8097)
Operating System and Display					Model ID		Watch6,17
Pre-installed OS			watchOS 9 (20R361)		Camera		N/A
Maximum OS			Current		Dimensions		1.61 x 1.37 x 0.42
Built-in Display			1.9″ OLED		Average Weight		1.49 ounces
Display Resolution			396×484		Minimum iPhone Support		N/A

Identifier reference: MNNW3CH/A, A2858, EMC 8097. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: September 4, 2025Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This Apple Watch at a glance

Family: Apple Watch
Order Number: MNNW3CH/A
Model Number: A2858
EMC: 8097
Year: 2023

Use the order number, A-number, EMC, and model identifier together when comparing, buying, or selling this device.

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Next steps

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Common questions

Is MNNW3CH/A the same as A2858?

Not exactly. MNNW3CH/A usually points to a specific retail configuration, while A2858 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What Apple Watch is model A2858?

A2858 is the Apple A-number shown for this Apple Watch family. Use the order number, EMC, and model identifier on this page to narrow the exact configuration.

What does EMC 8097 mean?

The EMC number is another Apple hardware identifier. It helps separate closely related models that may share a similar name, year, or A-number.

Can the RAM or SSD be upgraded?

Check the spec table for the exact configuration. Many newer Apple Silicon Macs have memory and storage integrated into the board, so RAM and SSD upgrades are often not practical after purchase.

What macOS versions work with this model?

Use the model identifier, release year, and processor family from the spec table when checking macOS compatibility. Compatibility can change as Apple releases new macOS versions.

Is this Apple Watch still worth buying used?

It can be, depending on price, battery health, memory, storage, and condition. Compare this exact order number and model identifier against similar Techable listings before buying.

How much is this Apple Watch worth?

Value depends on RAM, storage, battery health, cosmetic condition, accessories, and market demand. Use the SellMac path on this page for a quote or use the identifiers here when comparing resale prices.

What should I search if this page is not the exact configuration?

Search the order number first when available, then compare the A-number, EMC, model identifier, year, chip, RAM, and storage. The same A-number can cover more than one configuration.

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