Check out the specs (and X-rays!) on our 45 mm teardown unit:

1.4 inch (34 mm) circular super AMOLED display with 360 × 360 resolution

Exynos 9110 Dual-core, 1.15 GHz Cortex-A53

1 GB RAM and 8 GB storage (its predecessor had 1.5 GB RAM and 4 GB internal storage)

Wireless charging

ECG sensor, optical heart rate sensor, accelerometer, barometer, gyroscope

IP68 ingress protection, rated for water resistance to a depth of 50 meters (5 ATM)

All that in a package that's reportedly 14% thinner and 15% lighter than the previous gen. Check out this X-ray from our friends at Creative Electron to see it all at once, then keep reading to watch it come apart.