LTPO OLED Retina display with Force Touch support
Series 4 is available in two sizes 40 mm (324 x 394) and 44 mm (368 x 448)
Apple designed 64-bit dual-core S4 SiP chip
Optional LTE and UMTS, built-in GPS/GLONASS/Galileo/QZSS, NFC, Wi-Fi 802.11b/g/n 2.4 GHz, support for Bluetooth 5.0
Improve acceleration sensors and gyroscopes,
Waterproof rating is improved, underwater is 50 meters without failure
Appearance Series 4 is not much different from Series 3, but it can be found by X-rays, and the internal changes are very large.
The back cover of the Apple Watch Series 4 is designed with ceramic + sapphire
Apple Watch Series 4 new mold model A2008, another serial number
Heat up and open the screen
This is the screen of the Apple Watch Series 4
The 44mm model has a screen area of 977 square millimeters, and the Series 3 42mm model has a screen area of 740 square millimeters.
The screen size of the 40 mm model is 759 mm 2 , and the screen size of the Series 38 mm model is 563 mm 2 .
Remove the battery fixing screw
This is the battery of the Apple Watch Series 4. Apple claims that the Series 4 can last for 18 hours. The battery information is 1.113Wh (291.8 mAh, 3.81V), model A2059
Series 4's battery capacity increased by 4% compared to last year's Series 3
Washer for Force Touch
This is the Taptic Engine of the Apple Watch Series, which is a linear actuator for electromagnetic vibration.
This is the new speaker of the Apple Watch Series. Apple says the volume is increased by 50%.
Then there is S4 SiP, the chip above includes:
Red: Anwark AFEM-8087
Orange: OU JQ
Yellow: YY MEH ECE (acceleration sensor + gyroscope)
Green: AE827 I2033 0836
Purple: STMicroelectronics ST33G1M2 32-bit MCU with ARM SecurCore SC30
Heart rate sensor at the bottom of the Apple Watch Series 4
The above chips include:
Red: A88 AY10
Orange: 18206 00D5
The golden ring is the antenna of the Apple Watch.
Finally, the new digital crown:
The internal gold cylinder has tiny scratches that allow the optical encoder (small black box on the ribbon cable) to track its rotation.
The elastic bracket behind the cylinder may conduct electrical signals from the finger to the watch to complete the ECG circuit.
The small switch behind the spring acts as a mechanical button for the crown. In addition, there is a good gasket on the outer crown to prevent liquid from entering.
Disassembled! The original Apple Watch was a revolutionary product, but the upgrades have not changed until Apple Watch Series 4.