Bronc Adjustable Wireless Pen
Bronc Adjustable Pen Machine with Swiss Motor
This machine has stroke adjustment between 2.6 and 4.0. This gives it the artist the ability to choose between a short stroke and a long stroke.
It can be charged with the wire and charging block which come with the machine.
You can also switch out the batter pack for the RCA attachment if you feel like using a cord instead of the battery.