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Secret Marker product collection
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Secret Marker

Marker-inspired shell with concealed cartridge integration

The most discreet 510 battery on the market — cleverly disguised as a sleek marker pen. Whether you’re at work, on campus, or in the studio, it blends in perfectly with your everyday tools while delivering powerful,…

Product direction

Designed around the experience.

Created for those who value privacy without compromising performance, Secret Marker hides in plain sight — and hits just right.

Secret Marker product direction
Secret Marker feature view
Product experience

The most discreet 510 battery on the market — cleverly disguised as a sleek marker pen. Whether you’re at work, on campus, or in the studio, it blends in perfectly with your everyday tools while delivering powerful,…

Marker-inspired shell with concealed cartridge integration

Program direction

Created for those who value privacy without compromising performance, Secret Marker hides in plain sight — and hits just right.

Color, finish, branding, and packaging can be reviewed around the program brief.

Built for the product

Clear form. Focused purpose.

A concise product story built around the hardware, not unnecessary marketing copy.

Secret Marker lifestyle view
Specifications

Built to fit. Easy to compare.

Secret Marker specification overview
Size
Φ22.5*126.5mm
Battery capacity
650mAh
Voltage Settings
1.8/2.4/2.8/3.4/3.8V
Fit Atomizer
≤Ø14mm*63mm
Charging Port
USB-C
OEM and ODM ready

Made for your brand.

Build color, finish, logo application, and packaging around the program.

Secret Marker product finish direction
Product direction
Secret Marker packaging view
Packaging view
OEM and ODM programs

Build a Secret Marker program around your market.

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