Smyle Labs

Smyle Labs Invented the Penjamin — The Original Disguised 510 Cart Battery, Viral Since 2023

In the 510 battery market, most devices look like vapes because they are vapes — a standard pen or box shape that visually signals its function to anyone nearby. Smyle Labs, based in California, took a different direction: build a 510 cart battery that looks exactly like something else. The first result was the Penjamin — a fully functional ballpoint pen with a 510-thread cart battery built inside. It went viral in 2023 across Reddit (r/oilpen, r/trees), TikTok and YouTube as reviewers confirmed it works both as a vape and as a writing pen. The Penjamin Cart Pen now carries over 4,400 verified reviews — the most-reviewed disguised 510 battery on the market — with the Car Key Penjamin at nearly 3,000 reviews behind it.

Smyle Labs self-describes as "Viral Penjamin Battery Inventors" and "Founders of the Penjamin™" across their official site. The Penjamin name is trademarked. The category Smyle created — a 510 battery that is also a fully functional, everyday-use object — has since been widely imitated by other brands, but Smyle Labs retains the original, the highest review count and the broadest product range in the disguised 510 category. Their full catalogue covers 15+ products including the Wandjamin, Inhaler, Lip Balm, Mini Plug, Robotjamin, Danksaber, Raygun and Torch variations. Three are available at ProCannabis.

Three Disguise Philosophies — Key Fob, Permanent Marker and Handbag

The three Smyle Labs products at ProCannabis represent three distinct approaches to disguise — each for a different carry context and buyer profile.

The Car Key Penjamin targets everyday carry users who want the cart on their body at all times without reaching for a separate device. The key fob lives on your keychain — where keys already live — and requires no additional carry infrastructure. The magnetic adapter system means the cart stays locked inside the key body rather than threaded visibly on the outside.

The Permanent Marker Penjamin targets workspace and desk-environment users — the person who wants a session at their desk or in a professional setting where a vape device would draw attention but a marker sitting in a pen holder reads as completely unremarkable. The hollow marker body stores carts up to 4g fully concealed and functions as a working permanent marker in your actual pen holder.

The Pursejamin targets fashion-forward users, primarily women, who carry a handbag daily and want vape hardware that integrates into their aesthetic rather than clashing with it. The handbag form factor means it reads as a bag charm or small accessory, not as a vape device. Limited edition production runs and hand assembly mean each Pursejamin has a distinct character from mass-produced alternatives.

How Does the Car Key Penjamin Work — Magnetic Adapter, Keychain Carry and Three Voltage Settings?

The Penjamin Car Key is engineered to be visually indistinguishable from a standard key fob when clipped to a keychain. The magnetic cart system is what makes the carry possible: instead of threading a cartridge onto the outside (which would visibly expose it), a gold magnetic adapter threads onto the cartridge first, then the adapter-fitted cart drops inside the key body where the magnet holds it secure. The mouthpiece cap (including an optional longer cap for different cart sizes) closes over the top.

• Voltage settings: Three adjustable steps matched to cart oil viscosity — lower for thin, runny oils; higher for thick concentrates. Cycle through by pressing the fire button three times rapidly.
• Preheat: Double-click to activate quick preheat for cold or thick oil carts before drawing.
• Charging: USB-C port, 15 to 30 minutes to full charge. Approximately one week of typical use per charge.
• Cartridge compatibility: Standard 0.5g and 1g 510-thread carts. Cart sold separately — browse Delta-8 510 cartridges at ProCannabis to pair with the Car Key Penjamin.
• Colors: Black, Silver, White.
• Included: Key ring, gold magnet adapter, optional longer cap, USB-C cable.

One real-world note from verified buyer reviews: the magnetic adapter requires firm seating for consistent contact. If draws feel weak or intermittent, press the cart down firmly against the adapter before closing the cap. This resolves the majority of connection issues reported across independent reviews at elementvape.com and mindvapes.com.

Does the Permanent Marker Penjamin Actually Write — Storage Capacity, Hidden Fire Button and Specs?

The Permanent Marker Penjamin is the most storage-capable product in the Smyle Labs lineup at ProCannabis: the hollow marker body accommodates carts up to 4g in size — larger than any standard cart battery accommodates — fully concealed inside the marker casing with the cap closed. The device includes two working marker tips so it functions as an actual permanent marker for everyday use. The fire button is hidden under the clip, maintaining the disguise even during a session — the action of pressing the clip while holding the marker reads as holding a marker, not operating a vape.

• Storage capacity: Carts up to 4g fit fully inside the hollow body — 0.5g, 1g, 2g and larger formats all accommodate.
• Writing function: Two working permanent marker tips included. The device writes. It is not a marker-shaped vape — it is a marker that is also a vape.
• Fire button: Hidden under the clip. Press and hold while drawing through the mouthpiece.
• Voltage: Variable voltage settings cycling via three rapid button presses.
• Preheat: Double-click for quick preheat.
• Charging: USB-C with cable included.
• Colors: Black, Silver.
• Included: Marker device, 2x marker tips, extra-tall cap, 510-thread cart adapter, USB-C cable.

What Is the Pursejamin and Why Is Each One a Limited Edition?

The Pursejamin is the most fashion-forward product in the Smyle Labs lineup and the only one assembled by hand in limited production runs — meaning each unit is individually built rather than manufactured at scale. Three colorways at ProCannabis: Orange, Brown and LV Print. The LV Print in particular mimics luxury fashion house monogram patterns, making it visually indistinguishable from a designer bag charm or small accessory.

• Voltage: Three-step adjustable — 3.0V, 3.3V, 3.6V. Lower settings preserve terpene character in thin oils; 3.6V for thick concentrates requiring higher heat.
• Preheat: Available for cold or viscous oil carts.
• Charging: USB-C fast charging.
• Carry: Built-in keychain ring for everyday carry or bag attachment.
• Cart storage: Conceals most standard 1g carts inside the body — pair with CBD 510 cartridges at ProCannabis for a non-intoxicating daily carry setup, or any THC cart for full effect.
• Assembly: Hand-assembled, limited edition production runs — stock is finite and colorways sell out without restock.

The full Smyle Labs catalogue — including the Penjamin Cart Pen, Wandjamin, Inhaler battery, Lip Balm pen, Mini Plug, Robotjamin, Heartjamin, Danksaber and Raygun — is available at smylelabs.com. For the full range of 510 concentrate accessories at ProCannabis including carts, batteries and hardware beyond Smyle Labs, browse the concentrate vaporizer collection.