On of the most known manufacturers of 3D printing pens, 3Doodler just announced a new pro version.
The new model will feature a carbon housing, an LCD to show your settings at a glance, and adjustable temperatures, two fan speeds and a control for the extrusion speed.
The 3Doodler Pro can be powered by a battery or straight from the outlet. Both options are included in the 249$ package. The adjustable temperature enables you to use different materials.
Here is an overview about the main functions: