Apple Watch Series 4 (GPS + Cellular) vs. Apple Watch Series 6 (GPS + Cellular)

Smartwatch Comparison, Reviews and Tests

Detailed comparison and review of Apple Watch Series 4 (GPS + Cellular) and Apple Watch Series 6 (GPS + Cellular). With our comprehensive overview, you can simply compare size, design, functions, battery capacities, but also other key features of both smartwatches and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the watch that best fits your needs and expectations.

Smartwatch Specifications Comparison

Apple Watch Series 4 (GPS + Cellular) vs. Apple Watch Series 6 (GPS + Cellular) Comparison Chart
GENERAL Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Product Type Smart watch Smart watch
Operating System WatchOS 5 WatchOS 7
Supported Host Device OS iOS iOS 14 or later
Wearing Style Watch style Watch style
Audio Input Microphone Microphone
Audio Output Speaker Speaker
Width 34 mm -
Height 40 mm -
Depth 10.7 mm -
Weight 39.8 g -
Body Details - Case only: 39.7 g
Body Material Stainless steel Stainless steel
Protection Waterproof Water-resistant
Clock Display Yes Yes
FEATURES Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Sensors Accelerometer, ambient light sensor, gyro sensor, barometric altimeter, optical heart sensor, electrical heart sensor Accelerometer, ambient light sensor, digital compass, gyro sensor, barometric altimeter, optical heart sensor, electrical heart sensor, blood oxygen sensor
Tracking Data Distance, time, calories burned, activity, heart rate, steps taken, UV index, Air Quality index Distance, time, calories burned, activity, sleep activity, heart rate, blood oxygen saturation, ECG
Goal Setting Yes Yes
Features Music remote handling, ECG accurate heart rate, listening to music, Retina Display technology, call alerts, automatic exercise recognition, Fall detection, Emergency SOS Music remote handling, ECG accurate heart rate, camera remote control, Retina Display technology, Fall detection, Emergency SOS, irregular beat alerts, Family Setup support
Notifications Calendar, SMS, Email Calendar
Vibrating Alert Yes Yes
Feedback Type Audio alert, vibration alert, visual interface Audio alert, vibration alert, visual interface
Navigation (GPS) GPS/GLONASS/Galileo/QZSS receiver GPS/GNSS receiver
Payment Technology Apple Pay Apple Pay
Internet of Things (IoT) Compatible - Yes
IoT Intelligent Assistant Siri Siri
IoT Voice Controlled - Direct
CELLULAR Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Technology WCDMA (UMTS) / GSM WCDMA (UMTS)
Mobile Broadband Generation 4G 4G
SIM Card Type Electronic SIM card (e-SIM) Electronic SIM card (e-SIM)
Messaging Services SMS -
Supported Mobile Messaging Services SMS -
CONNECTIVITY Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Wireless Interface IEEE 802.11b/g/n, Bluetooth 5.0 IEEE 802.11b/g/n, Bluetooth 5.0
DISPLAY Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Type LTPO OLED - colour LTPO OLED - colour
Resolution 324 x 394 pixels 324 x 394 pixels
Screen Size 1.57" -
Screen Protection Sapphire glass Sapphire glass
Always On Display (AOD) - Yes
INPUT DEVICE Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Type Touch sensitive screen (Force Touch) Touch sensitive screen
CASE Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Case Size 40 mm 40 mm
Case Shape Rectangular Rectangular
Case Back Sapphire crystal and ceramic back Sapphire crystal and ceramic back
Case Details Stainless steel | Space grey aluminium | Space black stainless steel | Silver aluminium | Gold aluminium | Gold stainless steel Gold stainless steel | Blue aluminium | Silver stainless steel | Graphite stainless steel | Gold aluminium | Space grey aluminium | Red aluminium | Silver aluminium
Crown Type Digital with haptic feedback Digital with haptic feedback
BAND Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Band Type Milanese loop Sport band
Band Size - S/M/L
Fits Wrist with Circumference 130-180 mm 130-200 mm
Changeable - Yes
Clasp Type Magnetic closure Pin-and-tuck
Band Material Steel mesh Fluoroelastomer
Band Colour White | Black | Pink sand | Space black | Gold | Seashell | Stone Deep navy | White | Black | Pink sand | Cyprus green | Red | Black Unity | Silver | Graphite | Gold | Garnet
STORAGE Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Storage Capacity 16 GB 32 GB
CPU Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Manufacturer Apple Apple
CPU Type S4 S6
Features W3 Apple wireless chip W3 Apple wireless chip, U1 chip
BATTERY Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Technology Lithium Ion Lithium Ion
Battery Life 18 hours 18 hours
Rechargeable Battery Yes Yes
Wireless Charging Yes Yes
MISCELLANEOUS Apple Watch Series 4 (GPS + Cellular) Apple Watch Series 6 (GPS + Cellular)
Included Accessories Power adapter, magnetic charging cable Magnetic charging cable
Preloaded Software Apple Pay Apple Pay, GymKit
SAR Value 0.27 W/kg (head), 0.26 W/kg (limb) 0.29 W/kg (head), 0.31 W/kg (limb)
Max Depth of Water Resistance 50 m 50 m
Manufacturer Model Number - A2375
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