The G-Pen Wax Vaporizer Review


by James Bickford

Updated: December 16, 2020

G-Pen Wax Vaporizer desktop

Review Score: 67/100

Price Range:
Battery Capacity:
900 mAh
2.25 x 3.25 x 5.75 inches
Works with:
  • Wax icon


  • High-quality materials in atomizer and battery
  • Easy-to-use with one-button operation
  • Very portable, lightweight and discreet


  • Weak vapor production

Starting Price: $ 49.95

The G-Pen is a wax pen from legendary vape company Grenco Science. The entire unit consists of a dual-quartz rod atomizer, wrapped in Kanthal coils, and a battery, which has a single power button.

G-Pen Wax Vaporizer desktop

The G-Pen concentrates pen is very compact and lightweight. The three parts that make-up the device are the battery, atomizer, and mouthpiece.

The battery has a rubberized exterior, soft-to-the-touch, and has a single, polished, metal firing button in its front. There are two LED lights, one behind the power button, and the other at the base, both of which will flash whenever the battery is turned on.

User Interface

g pen box wax pen

The atomizer section has high-quality materials throughout, like the stainless steel, and borosilicate-glass heating chamber inside. The mouthpiece is black plastic, but given that the rest of the device is well-built, the mouthpiece’s construction can be overlooked.

The atomizer has the same rubberized exterior as the battery. The mouthpiece section unscrews from the heating chamber, and underneath it, there is a stainless-steel, wire-mesh filter to purify the vapor coming up out of the chamber.

Working the G-Pen Wax Vaporizer

One advantage of this unit is its straightforward usability. The atomizer has proprietary threaded, unique to only Grenco Science batteries, so it cannot be used with 510 or 810 threaded cells.

There is a separate dry herb atomizer that features the same threading so it can be used with this battery. The dual-quartz rods are a little further down than similar chambers, which can make loading sticky waxes and dabs a little tricky.

If loading does prove difficult, try heating the dab tool a little to make sure the material melts off instead of sticking to it. The other option is to slightly freeze the wax, hardening it, so it does not stick while the loading the chamber.

Once the material has been successfully loaded, screw the mouthpiece back on, and click the power button five times. To take a hit, press and hold the power button, and inhale.

Taking a Vape with the G-Pen

g pen all review

The vapor production on the G-Pen is excellent, flavorful, smooth and not harsh at all. The clouds are not so big, but for a small, discreet vape pen, gigantic plumes of vapor are not to be expected.

On a fully charged battery and less than a gram of material, 5-10 hits can be expected. The battery life is excellent as well, with the cell going out about an hour with heavy use.

The G-Pen Wax Vaporizer vs. the Mig Vapor WASP vs. the KandyPens Prism

The Mig Vapor WASP

Colors of Mig Vapor WASP Wax Air Vape Pen image

The WASP has an atomizer that contains carborundum rods wrapped in stainless steel coils that make them longer-lasting. It also features a Pyrex glass mouthpiece, and a stylish green PC tube to ensure a clean and pure vapor path. The vapor production of the WASP’s 900 mAh battery combined with the 1.0ohm resistance of the coil is also full and bountiful.

The KandyPens Prism

KandyPens Prism desktop

The KandyPens Prism is rare for KandyPens as it is a serious, wickless, dual-quartz atomizer with four preset temperatures. The Prism has a minimalist, stream-lined, all stainless-steel exterior and one-button controls.

The G-Pen Wax Vaporizer Specifications

The G-Pen Wax Vaporizer
Manufactured by: Grenco Science
Color: Black
Size: 2.25 x 3.25 x 5.75 inches
Weight: 0.65 lbs
Voltage: 110v
Battery Capacity: 900 mAh
Heating Style : Conduction
Oven Material : Stainless Steel

Pros & Cons

The Positives

  • High-quality materials in atomizer and battery
  • Easy-to-use with one-button operation
  • Very portable, lightweight and discreet

The Negatives

  • Weak vapor production
  • Atomizer not very durable

The G-Pen Wax Vaporizer: The Last Word

The G-Pen is a good buy, considering the quality of materials and the fact that the battery can be used with other Grenco atomizers for dry herbs or liquids.

Holding G Pen Vaporizer (Dual Quartz)

The vapor production may not satisfy all, but for vapers who want to remain discreet while they are vaping in public, the G-Pen gives off satisfying hits without clouding the immediate surrounding.

Published: October 27, 2017Updated: December 16, 2020

James Bickford

My way of understanding the significance of vaping came not only through the disruption of smoking but its effects on society as a whole. Now I bring people to vaping and bring vaping to people. I love using new gear, writing in-depth reviews and generally nerding out about vaping to like-minded people.


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