Compare Apple – Watch 42mm A1554 vs Apple – Watch Series 7 41mm TD-LTE NA A2475 Specifications

Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Brand
Apple Apple
Model
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Brief
Space black stainless steel, or stainless steel 42 mm case, Sapphire crystal, Retina display, and ceramic back The design of Apple Watch Series 7 is refined with softer, more rounded corners and the display has a unique refractive edge that makes full-screen watch faces and apps appear to seamlessly connect with the curvature of the case
Released
2015 Apr 24 2021 Oct 14
Hardware Designer
Apple Apple
Manufacturer
Quanta Computer Luxshare iTech
Codename
Apple Watch 1
2 		Apple Watch 6
8
OEM ID
n28aap N188sAP
General Extras
Haptic touch feedback
Tactile touch feedback 		Haptic touch feedback
Tactile touch feedback
Device Category
Smartwatch Smartwatch
List of Additional Features
changeable straps
iOS 8.2 support 		Ion-X Sapphire glass screen
changeable straps
iOS 15 support
optical and electrical heart-rate sensors
LTPO OLED Retina Display
UWB support
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Width
42 mm
1.65 inch 		35 mm
1.38 inch
Height
35.9 mm
1.41 inch 		41 mm
1.61 inch
Depth
10.5 mm
0.41 inches 		10.7 mm
0.42 inches
Bounding Volume
15.8 ccm 15.4 ccm
Mass
50 g
1.76 ounces 		32 g
1.13 ounces
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Platform
Apple iOS / iPadOS Apple iOS / iPadOS
Operating System
Apple Watch OS 1.0 Apple watchOS 8
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
CPU Clock
520 MHz 1800 MHz
CPU
Apple S1 APL0778 (S7002)
2,015
32 bit
single-core
32 Kbyte D-Cache
256 Kbyte L2
28 nm
IMG PowerVR SGX543 GPU 		Apple S7 (T8301)
2,021
64 bit
dual-core
7 nm
Apple S6 GPU
RAM Type
Yes LPDDR4x SDRAM
RAM Capacity
512 MiB RAM 1024 MiB RAM
Non-volatile Memory Type
Flash EEPROM Flash EEPROM
Non-volatile Memory Interface
Yes Yes
Non-volatile Memory Capacity
7629 MiB non-volatile 30518 MiB non-volatile
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Display Diagonal
39.78 mm
1.6 inch 		42.3 mm
1.7 inch
Resolution
312x390
121680 pixels 		352x430
151360 pixels
Display Width
24.85 mm
0.98 inch 		26.79 mm
1.05 inch
Display Height
31.06 mm
1.22 inch 		32.73 mm
1.29 inch
Horizontal Full Bezel Width
17.15 mm 8.21 mm
Display Area
771.9 square millimeter 877 square millimeter
Display Area Utilization
51.2% 61.1%
Pixel Size
0.07965 mm/pixel 0.07612 mm/pixel
Pixel Density
319 PPI 334 PPI
Display Type
Color AM-OLED display Color AM-OLED display
Display Subtype
Retina Display N/A
Display Color Depth
24 bit/pixel 24 bit/pixel
Number of Display Scales
16.8M 16.8M
Display Dynamic Range Depth
8 bit/pixel 8 bit/pixel
Display Illumination
Self-illuminating Self-illuminating
Display Light Reflection Mode
Yes Yes
Display Subpixel Scheme
Yes Yes
Scratch Resistant Screen
Sapphire Glass Yes
Graphical Controller
PowerVR SGX543 N/A
A/V Out
No No
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Audio Channel(s)
stereo stereo
Microphone(s)
mono mono
Loudspeaker(s):
mono mono
Audio Output:
No No
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Supported Cellular Bands
No UMTS 2100MHz (Band I, IMT), UMTS 1900MHz (Band II, PCS), UMTS 1700/2100MHz (Band IV, AWS), UMTS 850MHz (Band V, CLR), UMTS 900MHz (Band VIII), LTE 2100 MHz (Band 1), LTE 1900 MHz (Band 2, PCS), LTE 1800 MHz (Band 3), LTE 1700/2100 MHz (Band 4, AWS), LTE 850 MHz (Band 5), LTE 2600 MHz (Band 7), LTE 700 MHz (Band 12), LTE 700 MHz (Band 13), LTE 700 MHz (Band XIV), LTE 700 MHz (Band 17), LTE 800 MHz (Band 18), LTE 800 MHz (Band 19), LTE 1900 MHz (Band 25), LTE 850 MHz (Band 26), TD-LTE 1900 MHz (Band 39), TD-LTE 2300 MHz (Band XL), TD-LTE 2500 MHz (Band XLI), LTE 1700/2100 MHz (Band 66) bands
Complementary Phone Services
Vibrating Alert Voice transmission, Voice speaker, Vibrating Alert
Sec. Supported Cellular Networks:
No No
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Touchscreen Type
Capacitive multi-touch sensing screen Capacitive multi-touch sensing screen
Touchscreen Simultaneous Touch Points
Yes Yes
Scroll Wheel
Pressable rotary scroll wheel Pressable rotary scroll wheel
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Expansion Interfaces
No No
USB
No
No 		No
No
USB Connector
No No
Bluetooth
Bluetooth 4.0
Internal antenna 		Bluetooth 5.0
Internal antenna
Wireless LAN
IEEE 802.11b
IEEE 802.11g
IEEE 802.11n
Internal antenna 		IEEE 802.11b
IEEE 802.11g
IEEE 802.11n
Internal antenna
NFC
Yes Yes
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
FM Radio Receiver
No No
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Supported GPS protocol(s)
No GPS (NMEA 0183)
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Camera Image Sensor
No No
Focus
No No
Flash
No No
Aux. Camera Image Sensor
No No
Aux. 2 Camera Image Sensor
No No
Aux. 3 Camera Image Sensor
No No
Aux. 4 Camera Image Sensor
No No
Aux. 4 Camera Focus
No No
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Secondary Camera Sensor
No No
Sec. Aux. Cam. Image Sensor
No No
Sec. Aux. 2 Cam. Image Sensor
No No
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Built-in accelerometer
Yes Yes
Built-in gyroscope
Yes Yes
Additional sensors
Barometer
Heart rate sensor
Light intensity sensor 		Altimeter
Barometer
Heart rate sensor
Blood oxygen sensor
Light intensity sensor
Step counter
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Protection from solid materials
Yes 6 Totally protected from dust (no ingress)
Protection from liquids
7 Protected against the effect of immersion up to 1m of depth 9 Protected against high temperature high pressure spray downs
Immersion into liquids (depth limit)
100 cm 5000 cm
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475
Battery
Lithium-ion polymer (LiPo)
built-in
1-cell 		Lithium-ion
built-in
1-cell
Nominal Cell Voltage (1st cell)
3.78 Volts 3.85 Volts
Nominal Cell Capacity (1st cell)
250 mAh cell 284 mAh cell
Nominal Battery Voltage
3.78 Volts 3.85 Volts
Nominal Battery Capacity
250 mAh battery 284 mAh battery
Nominal Battery Energy
0.95 Wh 1.09 Wh
Wireless Charging
Yes Yes
Watch 42mm A1554 Watch Series 7 41mm TD-LTE NA A2475

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