eMate 300 Pen (unopened, 1997)

This eMate 300 Pen is a replacement stylus for the Newton eMate 300 device. The accessory is model number H0222Z/A and is unopened in the original packaging.

The eMate 300 was marketed to education as a low-cost laptop-like device, and was the only Newton with a built-in keyboard.

Source: Wikipedia