Apple Watch Series 3 and Series 5 Comparison

The most advanced apple watch yet, featuring the always on retina display the ECG Application, international emergency calling, fall detection, and built in compass on series 5. Heart monitoring, and connectivity ultimate device for a healthy life on series 3.

Series 3
Series 3

Series 5
Series 5
The coe fitness, health, and connectivity features of Apple watch. Available in 42mm and 38mm case sizes. The most advanced Apple Watch yet. Available in 44mm and 40mm case sizes.
Retina Display – Just raise your wrist and the display instantly comes to life. Always On Retina Display – The apple watch series 5 display never sleeps, so you can always see the time and information that’s most important to you. The viewing area stretches deep into the rounded corners and is over 30 percent larger than the Apple watch series 3 display.
42mm – 312 by 390 pixels

38mm – 272 by 340 pixels

44mm – 368 by 448 pixels

40mm – 324 by 394 pixels

  •  Aluminum
  • Aluminum
  • Stainless Steel
  • Ceramic
  • Titanium
Strong yet incredibly light, the apple watch series 3 case is made of aerospace that is 100 percent recycled. The Apple watch series 5 case is 11 percent thinner than the apple watch series 3 case and is available in a range of materials.
  • High and low heart rate notifications
  • Irregular heart rhythm notification
  •  High and low heart rate notifications
  • Irregular heart rhythm notification
  • ECG application
Just like series 5, Apple watch series 3 can also alert you if it detects unusually high or low heart rates or an irregular rhythm as well as measure your current heart rate. Apple Watch Series 5 can alert you if it detects unusually high or low heart rates or an irregular rhythm. It can measure your current heart rate. And using the electrical heart sensor the ECG application is capable of generating an ECG similar to a single lead electrocardiogram.
  • Heart Rate
  • ECG
  • Heart Rate
  • Emergency SOS
  •  Emergency SOS
  • Fall detection
  • International emergency calling
You can quickly call for help and alert your emergency contacts if you need to. With Emergency SOS, you can quickly call for help and alert your emergency contacts. Apple watch series 5 can also detect if you have taken a hard fall, then automatically call emergency services for you. And it can complete an emergency call while you are traveling abroad.
Optical heart sensor  Electrical heart sensor

Optical heart sensor

Dual core S3 chip Dual core S5 chip
Digital crown Digital crown with haptic feedback
Cellular connectivity on GPS+ Cellular models Cellular connectivity on GPS+Cellular models
GPS GPS

Compass

Apple watch series 3 includes an optical heart sensor for measuring your heart rate and heart rhythm, GPS to pinpoint your location, and cellular connectivity on GPS + Cellular models. Apple watch series 5 has both an optical heart sensor for measuring your hart rate and heart rhythm and an electrical heart sensor that enables the ECG application. The digital crown provides haptic feed back when you turn it. The speaker is 50 percent louder.
GPS/GNSS GPS/GNSS
Compass
Barometric altimeter Barometric altimeter
Water resistant (50 meters) Water resistant (50 meters)
Electrical heart sensor (ECG app)
Optical heart sensor Second generation optical heart sensor
International emergency calling
Emergency SOS Emergency SOS
Accelerometer (up to 16 g forces) Accelerometer (up to 32 g forces with fall detection)
Gyroscope Gyroscope
Ambient light sensor Ambient light sensor
Speaker Speaker (50 percent louder)
Microphone Microphone
Apple pay Apple pay
GymKit GymKit
Capacity 16GB (GPS + Cellular) Capacity 32GB (GPS + Cellular)
Capacity 8GB GPS Cᵃpacity  32GB GPS
Ceramic and sapphire crystal (center) Ceramic and sapphire crystal back
Retina OLED display with force touch – 1000 nits brightness Always On Retina LTPO OLED display with force touch – 1000 nits brightness
S3 with dual core processor S5 with 64-bit dual core processor – up to 2x faster processor
W2 – Apple wireless chip W3 – Apple wireless chip
LTE and UMTS GPS+Cellular models LTE and UMTS GPS+Cellular models
Wi-Fi 802.11b/g/n 2.4GHz Wi-Fi 802.1b/g/n 2.4GHz
Bluetooth 4.2 Bluetooth 5.0
Built in rechargeable lithium ion battery (up to 18 hours) Built in rechargeable lithium ion battery (up to 18 hours)
USB power adapter GPS + Cellular model only USB power adapter

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