G Pen Roam

G Pen Roam Vaporizer | Portable e-Rig
G Pen Roam Vaporizer | Portable e-Rig

The G Pen Roam is a concentrate vaporizer with a unique built-in water filter that cools and filters your vapor without needing a bong. Battery powered, the vaporizer heats up in seconds and offers a wide temperature range.

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By Vapospy Team on January 4, 2023 -
Updated on February 26, 2024
G Pen Roam Vaporizer | Portable e-Rig

The G Pen Roam is a concentrate vaporizer powered by a removable 1300mAh battery packed with convenient features. The revolutionary device from Grenco Science covered the innovative part by introducing the Hydro-Tube.

But that’s not all. It also features an intuitive design, temperature control, pass-through charging, and much more. Plus, you can replace individual parts to extend your vaporizer’s life.

Thanks to the hemp travel case, you can have all the accessories you need for a great session.

Unique Hydro-Tube

The G Pen Roam has a unique built-in water filter known as the Hydro-Tube. The Hydro-Tube cools and filters your vapor on-site without needing a bong as an intermediary.

The borosilicate glass Hydro-Tube is safe inside the unit and is not exposed. It also won’t spill, so it’s perfectly secure in your pocket or bag.

A tiny bit of water filtration comes a long way as it improves the smoothness of your vapor, making it comfortable to inhale.

Clever Design

The Roam has a durable yet stylish aluminum alloy casing and silicone covering around the outer side of the chamber, adding extra grip and safety.

Cleaning a concentrate vaporizer can be tricky as it may accumulate residue, but that’s not the case with the Roam, as you can remove and clean parts individually. This includes the Quartz tank chamber, the silicone air path, the Hydro-Tube, and the mouthpiece.

The included travel case holds everything in place. As a result, the casing is your all-in-one vaping station.

A Powerful Unit

The water-filtered concentrate vaporizer has a 1300mAh lithium-ion battery that can last about 20 sessions.

Thanks to the powerful battery, it heats up in just a few seconds. The Roam has a 30 seconds heat duration before it cools down to preserve your battery life and vaping material. Of course, you can extend or reduce the heat duration.

Using the provided micro-USB cable, G Pen Roam charges for about 90 minutes and can be used while charging. You can also purchase an extra battery to swap out whenever you want.

Temperature Control

The device has three buttons: a switch and two temperature controls. It has a curved LED display that shows the status of the device and haptic feedback to alert you.

You can set the Roam to a temperature between 315°C to 427°C ( 600°F to 800°F). In addition, you can set the vape to Max mode to end a session: after reaching 427°C ( 800°F), it will operate at full power. This is an ideal way to eliminate any residue in the chamber.

For another brand’s favorite for concentrates, check out the G Pen Connect, easy to connect with a water filtration piece. And for a dual-use vaporizer, the G Pen Hyer will suit your needs.

G PEN Roam Vaporizer Video

Check out this video to learn how to use and clean the G Pen Roam Vaporizer.

What’s in the box?

  • 1x G PEN ROAM Vaporizer
  • 1x Quartz tank
  • 1x Glass tube
  • 1x Mouthpiece
  • 1x Tool
  • 1x Micro USB charging cable


  • Brand / ManufacturerGrenco Science
  • Type:Portable Vaporizer
  • Haptic feedback:Yes
  • Usage:Wax/Concentrates
  • Heating Technique:Conduction
  • Temperature control:Full control
  • Energy Source:Battery
  • Material:Aluminum
  • Average battery life:20 sessions
  • Chamber/oven material:Quartz
  • Delivery Method:Direct
  • Automatic shut-off:Yes
  • Origin:USA
  • Pass-Through Charging:Yes
  • Charging Cable:Micro USB
  • Temperature Settings:600°F - 800°F (25°F interval)
  • Replaceable battery:Yes
  • Recharge Time:90 min
  • Battery capacity:1300 mAh
  • Warranty:1 year(s)
  • Other features:Unique water filtration system
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