Apple Watch Series 1 Aluminum “42 mm” Specs

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Apple Watch Series 1 – MNNL2LL/A – Watch2,7 – A1803

Apple Watch Series 1 Aluminium 42 mm Specs

About This Watch

The Apple Watch Aluminum, 42 mm is Apple’s first wearable that comes equipped with features that could very well make it a necessity rather than a luxury. With features focused on the health industry, the device comes with fitness tracking as well as a heart rate monitor. The device is water resistant and can be equipped with various options of bands to suit multiple occasions. When linked to your phone, the watch allows for call and message notifications right on your wrist. You will need an iPhone 5 or above to be able to pair it with the watch.

520 MHz Apple S1P

512 MB

Apple Watch Series 1 Aluminium "38 mm" Specs

8 GB Flash Storage

18 Hours

Storage & Memory

This Apple watch comes with 512 MB of RAM and 8 GB of memory along with a song capacity of 200 and a photo capacity of 100.

Screen Size and Resolution

This Apple watch model features a 42 mm screen with a 312×390 “Retina” display. A sapphire crystal layer is used to protect the screen and sapphire crystal lenses to protect the back charging/heart rate monitor mechanism. Its screen also includes “Force Touch” capability.

OS & Processor

This Apple Watch model comes with the newly customized Apple watch OS for its operating system. Developed to be intuitive to use while still functioning on a small screen, the OS worked in unison with IOS to provide a seamless experience. All of this is powered by a 520 MHz Apple S1P processor.

Battery

This Apple Watch battery is expected to go for up to 3 hours of talk time, 6.5 hours of audio playback or working out, up to 48 hours of use as a watch provided it is used at a 20 second per hour rate and also up to 72 hours of Power Reserve usage. The watch charges through a revolutionary induction charger which allows you to charge it wirelessly while sitting on its pad.

Inclusive Features

The Apple Watch includes the following features:

Force touch retina display
Digital crown control piece
Multiple wristband units
Heart-rate monitor
Emergency heart-rate detection
Wireless Charging
Bluetooth
Water resistant

Introduction Date: March 9, 2015					Discontinued Date: September 7, 2016
Processors					Memory
Processors		1			Onboard RAM	512 MB
Processor Speed		520 MHz			Storage
Processor Type		Apple S1P			Capacity	8 GB
Connectivity Details					Song Capacity	200
USB Support				N/A	Photo Capacity	100
FireWire Support				N/A	Description
Standard Wireless				802.11b/g	Case Type		Watch
Standard Bluetooth				4.0	Form Factor		Apple Watch Series 1 (42 mm)
Cell Network				N/A	Housing Color		Aluminum
Battery Details					Controller		Digital Crown
Battery Type	Lithium Ion				Apple Order Number		MNNL2LL/A
Battery Life	3 – 18 hours				Apple Subfamily		Watch Series 1 42mm
Standby Time	N/A				Apple Model Number		A1803 (EMC 3103)
Operating System and Display					Model ID		Watch 2.7
Pre-installed OS			Watch OS		Camera		None
Maximum OS			Current WatchOS		Dimensions		42 mm x 35.9 mm x 10.5 mm
Built-in Display			1.65 LCD		Average Weight		1.06 oz. (30 g)
Display Resolution			312×390		Minimum iPhone Support		iPhone 5

Identifier reference: MNNL2LL/A, A1803, EMC 3103. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: October 26, 2024Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This Apple Watch at a glance

Family: Apple Watch
Order Number: MNNL2LL/A
Model Number: A1803
EMC: 3103
Year: 2018

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

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Next steps

Use the spec table to confirm the exact device, then choose the right lookup, buy, or sell path.

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Common questions

Is MNNL2LL/A the same as A1803?

Not exactly. MNNL2LL/A usually points to a specific retail configuration, while A1803 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What Apple Watch is model A1803?

A1803 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 3103 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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