The Boundless Terp Pen II is a breath-activated concentrate vaporizer with no buttons at all. Pull the magnetic cap, touch the exposed coil to your concentrate, and inhale. That is the entire operation. The body is 100% medical-grade stainless steel, and the box holds the pen, a ceramic coil, a backup ceramic coil and a USB-C cable.
No buttons, and that is the design
Plenty of pens in this bracket ask you to learn something: hold for three seconds, click five times to change heat, watch for a light. The Terp Pen skips all of it. Inhaling turns it on, stopping turns it off, and heat-up is instant.
The practical result is a device you can run one-handed without looking at it, which is the reason people carry a pen instead of a rig in the first place. It is electric only, so there is no butane and no torch in the kit.
The coil-to-concentrate method
Most concentrate pens want you to load a chamber, which means a dab tool, a clean surface and some mess. The Terp Pen flips that. The coil sits exposed under the magnetic cap, so you bring the pen to the concentrate rather than loading the concentrate into the pen.
That keeps loading visual: you take what you touch. There is no chamber to scrape out, and the coil becomes a consumable part rather than a permanent one, which is why a spare ships in the box.
Coils are the running cost
A ceramic coil comes fitted and a backup ceramic coil is included, so the first replacement is already covered. After that, coils are the ongoing expense on this device. Boundless also makes quartz and crushed quartz coils that fit the same pen, so you can switch coil material without switching hardware.
Keeping the coil clean, and swapping it when it stops performing, is what keeps the pen working. Boundless backs the Terp Pen II with a 90-day limited warranty.
Specs
- Type: Concentrate vaporizer (dab pen)
- Activation: Breath-activated, no buttons
- Heat-up: Instant
- Body: 100% medical-grade stainless steel
- Cap: Magnetic
- Power: Electric, USB-C charging, no butane
- In the box: Terp Pen II, ceramic coil, backup ceramic coil, USB-C cable
- Coil options: Ceramic, quartz, crushed quartz
- Colors: Black, Magenta, Stainless Steel, Lemon Yellow
- Warranty: 90-day limited
- Price: $31.95
What it is not
This is a concentrate device only. It does not take dry herb, and treating it as a dual-purpose pen is the most common mistake people make with it.
If dry herb is what you want, Boundless builds the full-convection Tera and the compact Vexil. For concentrates with a real chamber and preset temperatures, the Dr. Dabber XS portable e-rig is the step up, and the Micro+ wax pen is a button-operated alternative at a similar size. Our portable dab devices roundup lays out the wider field.