Time for S Pen extraction. We couldn't find a non-destructive way to crack it open, so we swapped in the heavy weapons—the ultrasonic blaster cutter!

Now that Fortnite is here we were prepared for a tomato update, but the S Pen peels open like a banana.

What's in this loot llama? How about a DA14580 Dialog Semiconductor Bluetooth Smart SoC ...

... and a K8373 Seiko Instruments supercapacitor.

We'd guess that the supercapacitor powers the Bluetooth radio, which is only used for the single button. Other stylus functions operate without built-in power.

We'd also conjecture that the S Pen charges via the sensing coils near the tip. We found a grey pad near where the coils reside when the stylus is stowed—possibly an inductive charging pad.