If you liked that little taste of a biosensing chip from the last step, have we got a treat for you: more chips!

It takes some unscrewing and some spudgering, but the motherboards are out—Watch4 Classic on the left, and Watch4 on the right.

Samsung package combining the Exynos W920 dual-core 1.18 GHz processor with (what seems to be?) 1.5 GB of their in-house LPDDR4

Samsung Shannon 915 intermediate frequency IC

Broadcom BCM43013 ultra low power dual-band 802.11n Wi-Fi and Bluetooth 5.0 combo IC

Qualcomm Atheros QPA5580 power amplifier (likely)