Published August 19, 2019 Updated June 10, 2022
G Pen Gio Review

Review Summary

The G Pen Gio is one of the better proprietary oil vaporizers that I’ve tried because of how cool it looks and the great flavor quality. The cartridge variety isn’t as good as it is with 510 cartridges but it is still pretty solid, with a lot of great strains to choose from. If you don’t mind—or even prefer—using proprietary cartridges, then you should get a Gio for yourself.

Authorized Stores

MSRP $19

Kit and Accessories

G Pen Gio Kit
L-R: G Pen Gio package, G Pen Gio battery, G Pen Gio cartridge, USB charging cable. The cartridge is not included in the kit of the Gio.
  • G Pen Gio battery
  • USB charging cable

Compatibility: The Gio is only compatible with proprietary G Pen Gio cartridges.

Optional Accessories

The kit of the Gio is understandably bare-bones since all you need is the battery and the cartridge. Nonetheless, there are some cool and useful accessories that you can purchase if you feel so inclined. The most interesting is the water pipe adapter that allows you to filter the vapor through a water bubbler. Needless to say, this kills the Gio’s portability stone dead, but it does provide cooler vapor. 

The charging dock is a sleeker, less bulky accessory that’s great for both storing and charging the Gio. It’s a very cool-looking device that charges up the Gio very quickly and is useful even if you’re not using it for charging because it serves as a stylish stand for the Gio. Unlike the previous accessories, the silicon sleeve actually helps with portability because it provides some extra protection for the Gio while retaining its sleek form factor.

Design and Features

G Pen Gio Design
The Gio is very slim design and is about the size of the average e-cigarette. The contoured design is ergonomic and makes it easy to hold.


The Gio battery has a slim, ergonomic design that feels as good as it looks. It’s a very slim device, but it’s also nicely contoured so that your fingers get a good grip whether you are right or left handed. The cartridge attaches to the battery easily and it sits tight so you never have to worry that it will slip off. 

The mouthpiece of the cartridge feels good and has a slightly wider opening than what you see on many pre-filled cartridges, so it has a pretty good airflow. All of those design details means that the Gio easily stands out from the vast crowd of oil vaporizers out there. 

The Gio is roughly the size of your average e-cigarette so portability is very much a non-issue here. I already mentioned that it’s a very slim device so that just enhances the travel-friendliness even more. Quite simply, if you have a pocket, then you can take the Gio anywhere. The small size aids in discretion since you can fit the gio in the palm of your hand, however that discretion disappears once you start vaping since the Gio outputs some huge clouds.

The Gio is made from zinc alloy, so it’s a tough little device that can survive a drop or two or more. It’s also resistant to scratches, so it will look as good as new for as long as you own it.


The sheer convenience and ease of use are what makes the Gio stand out. It is more convenient than even 510 cartridges and is one of the simplest vaporizers to use whether you are a beginner or you are a seasoned vaper.

Pod Selection

G Pen Gio black and Cookies finish
The G Pen Gio uses proprietary, pre-filled cartridges from a variety of different manufacturers.

One concern many people understandably have with oil vaporizers that use proprietary cartridges is how wide a selection is available to them. Since the pods are bespoke rather than 510 threaded, there will be fewer options available.

That is the case with the Gio, but it still has a nice array of pods for you to choose from. And since they need to be approved by G Pen, you can be assured that the quality control is of a very high standard. These are the companies that have partnered with G Pen to produce pods of various different strains for the Gio:

  • Cookies
  • Evolab
  • State Wellness
  • Herbology
  • Caliva
  • Humboldt Farms
  • Raw Garden
  • Body and Mind
  • Deep
  • Pistil Point
  • TJ’s Gardens
  • Oleum Labs
  • Old Pal

How To Use

  1. Attach the cartridge to the battery.
  2. Inhale from the cartridge.

Yep, that’s it! It doesn’t get any simpler, and there’s no temperature or voltage selection to worry about either.

Performance and Vapor Quality

G Pen Gio Performance
The Gio has fewer strains to choose from than 510 batteries do, but there is a good variety and they are all quite flavorful.

Vapor Quality

The vapor produced by the Gio depends on the strain that you choose of course, but in general the vapor is robust and flavorful. You don’t have the variety you get with 510 cartridges, but the quality is more consistent and the pods are more reliable so you never have to worry about leaks or spills.

There is no voltage selection on the Gio that allows you to calibrate your settings but the default voltage level should suit most tastes. Though I should mention that it does seem to run a little hotter than other proprietary oil vaporizers like the Pax Era Pro

Because of that extra heat, the Gio produces some impressive clouds every time you use it. That isn’t great if you want to vape discreetly, but it does mean that the Gio is the oil vape of choice for cloud chasers. Draw resistance is pretty low too so it’s very easy to enjoy that vapor anytime you want.

Prices for the cartridges range from $30 on the low end to up to $70 on the higher end. That’s expensive for sure, but each cartridge can last from a week to a month depending on how frequently you use it. So you won’t be emptying each pod as soon as you get it.

Battery Performance

The battery has a 180 mAh capacity and can last for days of moderate vaping before it needs a recharge. That recharge does take about one to two hours though, which is rather long for such a small battery. So you need to make sure to schedule your charge time accordingly so that you aren’t left stranded when you need it most. You can also use the pass-through charging feature so that you can use the Gio while it recharges if you’re really impatient.

G Pen Gio Review

  • Brand G-Pen (Homepage)
  • MSRP $19
  • Product Type 510 Battery
  • Compatibility 510 Carts
  • Released DateMarch, 2019
  • Warranty 1 Year


  • Body Material Zinc Alloy
  • Display LED Indicators
  • Mobile App No
  • Haptic Tech No
  • 510 Thread Yes
  • Sesh Mode No
  • Adjustable Airflow No

Heating Element

  • Temp Settings 3 Levels
  • Heat Up Time 2-5s


  • Battery Type Internal
  • Battery Capacity 180mAh
  • Charge Time 1-2 Hours
  • Charger Type Micro-USB

Overall Score

  • Ease of Use3.7
  • Heat Dispersion3.3
  • Interface3.4
  • Design3
  • Durability3.4
  • Draw Restriction3.3
  • Ease of Cleaning3.6
  • Extraction Efncy3.5
  • Flavor3.2
  • Brand Rep4.8
  • Parts Availability3.7

Where To Buy?