Custom Casio mods, hand-built.

Design Yours Limited Drops 1 live now
4.91/5 395 customer reviews
3,000+ Watches built by hand
150K+ On YouTube
Every watch ships in a custom box of your choice.
Every watch ships in a custom box of your choice.

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Hand-crafted Custom Casio and G-Shock mods.

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Luke in the JellyLab workshop with a shipment of finished watches and boxes JellyLab Watches · Houston, TX

Every watch built by hand

Hi, I'm Luke. I started JellyLab to make a great watch a little more personal.

I left a career in finance to mod Casios full time. Every JellyLab watch starts as a brand-new, genuine Casio, gets disassembled and rebuilt at my bench in Houston, and ships in a box I 3D-print a few feet away.

  • 3,000+ watches built by hand
  • 48+ countries shipped to
  • 4.91/5 ★ 395 customer reviews
  • 150K+ on YouTube
Learn about JellyLab Watch on YouTube

Luke's One-Offs and Limited Editions

Experimental designs

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Filters, Decals, & Parts

DIY mod filters, decals, metal cases, and straps.

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4.9 ★ across 395+ reviews

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★★★★★

"I rarely leave reviews, but in this case, I had to. The watch is simply gorgeous. I own a few expensive watches, yet this one has quickly become my favorite to wear. Every single day, someone asks me about it. Complete strangers at that."

Kery B.
Stained Glass V1 Casio Royale · Verified buyer
★★★★★

"Love the watch! This is my new daily. I literally wear it more than my Rolex. Thank you."

Rhys R.
Radar Casio F-91W · Verified buyer
★★★★★

"I work at an automotive shop and was wearing a Black Bay as a daily but it would occasionally get banged up. This watch is the perfect replacement. Light and comfortable, totally customizable and replaceable if damaged for far less! I will be ordering the Radar shortly as a back up!"

Jordan S.
Starship Casio Royale · Verified buyer