Apple Watch 1st Gen vs. Series 3: A Detailed Comparison

The Apple Watch revolutionized the smartwatch market, but technology moves fast. The original Apple Watch 42mm and the Series 3 Aluminum represent significant points in that evolution. This comparison dives deep into their features, performance, and overall value to help you decide which is right for you.
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🏆 Quick Verdict

The Apple Watch Series 3 Aluminum is the clear winner. While the 1st gen offers a nostalgic experience, the Series 3’s dual-core processor, built-in GPS, and improved battery life provide a vastly superior user experience and modern functionality. It's a worthwhile upgrade for most users.

PHONES
Phone Names Apple Watch 42mm (1st gen) Apple Watch Series 3 Aluminum
Network
2G bandsN/AGSM 850 / 900 / 1800 / 1900
3G bands-HSDPA 850 / 900 / 2100 / 800 - Europe, Australia (A1891)
4G bands-1, 3, 5, 7, 8, 18, 19, 20, 26 - Europe, Australia (A1891)
EDGENo-
GPRSNo-
Speed-HSPA, LTE
TechnologyNo cellular connectivityGSM / HSPA / LTE
 -1, 3, 39, 40, 41 - China (A1892)
Launch
Announced2014, September. Released 2015, April2017, September. Released 2017, September
StatusDiscontinuedDiscontinued
Body
BuildGlass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frameGlass front, ceramic back, aluminum frame
Dimensions42 x 35.9 x 10.5 mm (1.65 x 1.41 x 0.41 in)42.5 x 36.4 x 11.4 mm (1.67 x 1.43 x 0.45 in)
SIMNoeSIM
Weight50 g body (2.82 oz)34.9 g (1.23 oz)
 IPX7 water resistant up to 1 meter and 30 minutes50m water resistant
Display
ProtectionSapphire crystal glassIon-X strengthened glass
Resolution390 x 312 pixels (~303 ppi density)390 x 312 pixels (~303 ppi density)
Size1.65 inches1.65 inches
TypeRetina OLED, 450 nits (peak)Retina OLED, 1000 nits (peak)
 3D Touch display3D Touch display
Platform
CPU520 MHz Cortex-A7Dual-core
ChipsetApple S1 (28 nm)Apple S3
GPUPowerVR SGX543PowerVR
OSwatchOS 1.0, upgradable to watchOS 4.3.2watchOS 4.0, upgradable to watchOS 8.7
Memory
Card slotNoNo
Internal8GB 512MB RAM8GB 768MB RAM, 16GB 768MB RAM
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker YesYes
Comms
Bluetooth4.0, LE4.2, A2DP, LE
NFCYesYes
PositioningNoGPS, GLONASS
RadioNoNo
USBNoNo
WLANWi-Fi 802.11 b/g/nWi-Fi 802.11 b/g/n
Features
SensorsAccelerometer, gyro, heart rateAccelerometer, gyro, heart rate, barometer
 Natural language commands and dictationNatural language commands and dictation (talking mode)
Battery
ChargingWirelessWireless
TypeLi-Ion 250 mAh (0.94 Wh), non-removableLi-Ion 341 mAh (1.34 Wh), non-removable
Misc
ColorsStainless Steel/Red, White, Brown/Black/Blue/Marine Blue Buckle, Blue/Stone/White/Storm Gray Leather Loop, Silver/Space Black Milanese Loop, Link Bracelet, Space Black Stainless Steel/Black, Black Link Bracelet, Pearl Woven NylonSilver, Gold, Space Gray
ModelsA1554A1860, A1861, A1889, A1891, A1890, A1892, A1858, A1859
PriceAbout 700 EURAbout 480 EUR
SAR-0.52 W/kg (head)     0.34 W/kg (body)
Camera
 NoNo

Apple Watch 42mm (1st gen)

  • Classic Design
  • Affordable Price
  • Wireless Charging

  • Slow Performance
  • Limited Features
  • Short Battery Life
  • Outdated Software

Apple Watch Series 3 Aluminum

  • Improved Performance
  • Built-in GPS
  • Better Battery Life
  • More Modern Features
  • Siri Improvements

  • Higher Price (compared to 1st gen)
  • Still Requires Daily Charging

Display Comparison

The Series 3 features a slightly brighter display with improved visibility, especially outdoors. Both watches use Apple's Retina display technology, offering sharp visuals, but the Series 3's advancements are noticeable. The 1st gen's display is adequate but can appear a bit dim in sunlight.

Camera Comparison

Neither watch has a built-in camera. This feature was never included in either model.

Performance

The Series 3's dual-core S3 chip provides a significant performance boost over the 1st gen's single-core S1. Apps launch faster, animations are smoother, and overall responsiveness is noticeably better on the Series 3. The 1st gen can feel sluggish at times, especially when multitasking.

Battery Life

The Series 3 offers improved battery life compared to the 1st gen, though both still require daily charging. The Series 3 typically provides around 18 hours of use, while the 1st gen often needs charging before the end of the day with moderate usage.

Buying Guide

Who should buy the Apple Watch 42mm (1st gen)? Primarily collectors or those seeking a very basic smartwatch experience at a low price. Who should buy the Apple Watch Series 3 Aluminum? Anyone looking for a reliable, feature-rich smartwatch with GPS for fitness tracking and improved performance.

Frequently Asked Questions

❓ Is the Apple Watch 1st Gen still usable?
Yes, but its limited features and slow performance make it less appealing than newer models. Software updates are no longer supported.
❓ Does the Apple Watch Series 3 have GPS?
Yes, the Series 3 Aluminum model includes built-in GPS, allowing for accurate workout tracking without needing your iPhone nearby.
❓ What is the battery life like on each watch?
The 1st gen typically lasts around 18 hours, while the Series 3 offers around 18 hours with moderate use. Both require daily charging.
❓ Can I still find a 1st generation Apple Watch for sale?
You're more likely to find them on the used market or from resellers. New stock is extremely rare.