Apple Watch (1st Generation) is a smartwatch that was designed, manufactured, and sold by Apple from 2015 to 2016 as a part of the Apple Watch series. The first Watch has been introduced on March 9, 2015, and released seven weeks later, on April 24, 2015. The price of the new Watch started at $349.
Apple Watch was released in three versions: Apple Watch Sport, which was made of Silver, Space Gray, Gold or Rose Gold Aluminum, and Ion-X glass.
The second version called Apple Watch is made of Silver or Black Stainless Steel and Sapphire crystal glass.
The third version called Apple Watch Edition comprises 18-Karat Yellow or Rose Gold and Sapphire crystal glass. Each of these versions has been prepared in two sizes, a smaller 38 mm case and a bigger 42 mm case, and paired with one of the 6 straps options.
Apple Watch has been developed to help track fitness activities. The Watch is offering a Fitness app to track and record fitness activities by selecting a dedicated Workout. Together with the Fitness app, a Heart Rate app has been built-in to track a heartbeat by an internal heart rate sensor that uses both infrared and visible-light LEDs and photodiodes.
Apple developed a motivation system called Activity. Activity is collecting data in the background and it’s exposing this data in three graphics rings. Each ring refers to a different category of activity such as Move, Exercise, and Stand. A Move ring shows how many calories have been burned so far. The Exercise ring displays how many minutes of exercise have been recorded so far. The Stand ring shows how many hours you have been standing today. Closing each ring is celebrated by animated graphics on the Watch screen. Closing all rings each day is recommended to keep health at the right level.
When it comes to specifications, Apple Watch has been equipped with a gorgeous OLED Retina display with Force Touch technology. The 38 mm version features a 1.5-inch display, and the 42 mm version features a 1.65-inch display on a diagonal. The new Watch is powered by an Apple original system-on-chip Apple S1 to provide the best performance.
The device features as well a 512 MB of RAM, 8 GB of storage, a Taptic Engine to provide natural feedback, Bluetooth 4.0 connectivity, NFC technology for Apple Pay, a heart rate sensor, a gyroscope, accelerometer, ambient light sensor, wireless charging system, water resistance with IPX7 certificate, and more. The battery in the Apple Watch lasts for up to 18 hours of use.
After a year and six months, Apple has released a new generation of Apple Watch. On September 7, 2016, this model has been discontinued and has been made unavailable to order in Apple Store anymore. Of course, you can still buy this Apple Watch from other sellers.
This Apple Watch has been replaced by Apple Watch Series 1 and Apple Watch Series 2. Because of that, this model (1st Generation) is commonly called Series 0. Software support for the first Apple Watch ended with watchOS 4.3.2.
Today original Apple Watch is 8 years old!

Apple Watch Release Date and Original Price
Introduced | March 9, 2015 |
Released | April 24, 2015 |
Discontinued | September 7, 2016 |
Model Identifier | Watch1,1 (38 mm) Watch1,2 (42 mm) |
Model Number | A1553 (38 mm) A1554 (42 mm) |
EMC | 2870 (38 mm) 2871 (42 mm) |
Generation | 1st |
Order Number | 38 mm Stainless Steel MJ302LL/A, MJ2Y2LL/A, MJ312LL/A, MJ322LL/A, MJYK2LL/A, MJ332LL/A, MJ362LL/A, MJ3A2LL/A, MJ3E2LL/A, MJ3F2LL/A, MLLD2LL/A, MLCK2LL/A, MLCL2LL/A MLE62LL/A, MMF82LL/A, MMFD2LL/A, MMF92LL/A, MMFH2LL/A, MMFK2LL/A 42 mm Stainless Steel MJ3V2LL/A , MJ3U2LL/A, MJ3X2LL/A, MJ3Y2LL/A, MJYN2LL/A, MJ452LL/A, MJ432LL/A, MJ402LL/A, MJ472LL/A, MJ482LL/A, MLLE2LL/A, MLC82LL/A, MLC92LL/A, MLFA2LL/A, MLFC2LL/A, MMFU2LL/A, MMFV2LL/A, MMFX2LL/A, MMG02LL/A, MMG22LL/A 38 mm Aluminum MJ2T2LL/A, MJ2V2LL/A, MJ2U2LL/A, MJ2W2LL/A, MJ2X2LL/A, MLCF2LL/A, MLCG2LL/A, MLCH2LL/A, MLCJ2LL/A, MMEC2ZA/A, MME92ZA/A, MMF02LL/A, MMF12LL/A, MMF22LL/A, MMF32LL/A, MMF42LL/A, MMF52LL/A, MMF62LL/A 42 mm Aluminum MJ3N2LL/A, MJ3Q2LL/A, MJ3P2LL/A, MJ3R2LL/A, MJ3T2LL/A, MLC42LL/A, MLC52LL/A, MLC62LL/A, MLC72LL/A, MMEE2ZA/A, MMED2ZA/A, MMFE2LL/A, MMFL2LL/A, MMFM2LL/A, MMFN2LL/A, MMFP2LL/A, MMFQ2LL/A, MMFR2LL/A 38 mm Rose Gold MJ8P2LL/A, MJ3K2LL/A 42 mm Rose Gold MJ4A2LL/A, MLFH2LL/A, MLE52LL/A 38 mm Gold MKL52LL/A, MJ3G2LL/A 42 mm Gold MJ8Q2LL/A, MKL62LL/A, MJVT2LL/A 38 mm Stainless Steel Hermes MLCN2LL/A, MLCP2LL/A, MLC02FD/A, MLC32VC/A, MLC22LL/A 42 mm Stainless Steel Hermes MLCC2LL/A, MLCD2LL/A, MLCE2LL/A |
Original Price | $349 – $399 (Apple Watch Sport) $549 – $1,099 (Apple Watch) $10,000 – $17,000 (Apple Watch Edition) |
Colors | Silver Space Gray Gold Rose Gold Stainless Steel Black Stainless Steel 18-Karat Yellow Gold 18-Karat Rose Gold |
Case | Stainless Steel (Apple Watch) Aluminum (Apple Watch Sport) Gold (Apple Watch Edition) |
Weight | 0.88 – 1.9 oz. (38 mm) 24 – 53 Grams (38 mm) 1.06 – 2.4 oz. (42 mm) 30 – 68 Grams (42 mm) |
Dimensions | 1.52” H x 1.31” W x 0.41″ D (38 mm) 3.86 cm H x 3.32 cm W x 1.04 cm D (38 mm) 1.65” H x 1.41” W x 0.41″ D (42 mm) 4.19 cm H x 3.58 cm W x 1.04 cm D (42 mm) |
Successor | Apple Watch Series 1 Apple Watch Series 2 |
Tech Specs
Processor
Processor | Apple S1 |
Processor Speed | 520 MHz |
Architecture | 32-bit |
Number of Cores | 1 |
Memory
Memory | 512 MB of RAM |
Storage
Storage | 8 GB |
Display
Display Materials | Ion-X glass (Apple Watch Sport) Sapphire crystal (Apple Watch and Apple Watch Edition) |
Display | 1.5″ OLED Retina Multi-touch Display (38 mm) 1.65″ OLED Retina Multi-touch Display (42 mm) |
Display Size | 563 mm2 (38 mm) 740 mm2 (42 mm) |
Resolutions | 272 x 340 (38 mm) 312 x 390 (42 mm) |
Brightness | 450 cd/m2 |
Pixel Density | 326 ppi |
Input
Input Method | Digital Crown Multi-Touch Force Touch Digital Touch Side Button |
Sensors
Sensors | Ambient light sensor Heart rate sensor Accelerometer Gyroscope |
Tactile Feedback | Taptic Engine |
Connections
Wi-Fi | 802.11b/g/n 2.4 GHz |
NFC | NFC for Apple Pay |
Location | None (utilizes GPS in paired iPhone) |
Bluetooth | Bluetooth 4.0 |
Audio In | 1 – Microphone |
Audio Out | 1 – Speaker |
Software
Original OS | watchOS 1.0 |
Maximum OS | watchOS 4.3.2 |
System Requirements | iPhone 5 or later iOS 8.2 or later |
Intelligent Assistant | Siri |
Power
Battery | Built-in rechargeable Lithium-Polymer |
Battery Capacity | 205 mAh (38 mm) 246 mAh (42 mm) |
Battery Life | Up to 18 hours |
Power | Apple 5W or 12W Power adapter |
References:
Apple Support – Apple Watch (1st generation): Technical Specifications
Apple Support – Apple Watch Sport (1st generation): Technical Specifications
Apple Support – Apple Watch Edition (1st generation): Technical Specifications