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Explore the entire CircuitMess collection and discover your next hands-on STEM adventure! From robots to game consoles, there are kits for kids, teens, and adults.

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    NASA Artemis Watch 2.0
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    NASA Artemis Watch 2.0

    A programmable, NASA-themed smartwatch with activity tracking & more

    $129.00
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    Fractions & Decimals Curriculum
    32 left

    Fractions & Decimals Curriculum

    Master math through motion: no parent instruction required

    $29.00
    $59.00-51%

    new

    Beep Boop Kirin
    16 left

    Beep Boop Kirin

    Inventor Beep Boop - your digital pet for techy mini-games

    $39.00

    bestseller

    Chatter 2.0
    16 left

    Chatter 2.0

    Build & code your own encrypted communicators

    $149.00
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    exclusive

    Rimac Nevera

    Rimac Nevera

    Fully-functional, limited-edition replica of Nevera hypercar

    $149.00
    $199.00-25%
    Estimated ship date: June 2026

    new

    Bit Expansion - Mr. Bee
    25 left

    Bit Expansion - Mr. Bee

    Unlock a unique Bit game & collect 14 tradable cards

    $8.99

    bestseller

    Clockstar 2.0
    14 left

    Clockstar 2.0

    Build & code your own smartwatch and connect it to your phone

    $99.00

    bestseller

    Jay-D 2.0
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    Jay-D 2.0

    Make your own DJ mixer and learn about digital sound production

    $169.00

    new

    ByteBoi 2.0
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    ByteBoi 2.0

    Assemble a retro DIY console, play pre-loaded games, and code your own

    $159.00

    new

    Bit Expansion - Hertz
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    Bit Expansion - Hertz

    Unlock a unique Bit game & collect 14 tradable cards

    $8.99

    new

    Wheelson 2.0
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    Wheelson 2.0

    Build and code a self-driving, AI-powered robot car

    $169.00

    new

    Beep Boop Miao Miao
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    Beep Boop Miao Miao

    Stealthy Beep Boop - your digital pet for tricky mini-games

    $39.00

    bestseller

    Bit 2.0
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    Bit 2.0

    Learn electronics and programming with this must-have DIY retro console

    $89.00

    new

    Artemis Watch Strap: Mars Red
    14 left

    Artemis Watch Strap: Mars Red

    A bold look in durable woven nylon, perfect for daily explorations

    $9.99

    new

    Bit Expansion - Artemis
    16 left

    Bit Expansion - Artemis

    Unlock a unique Bit game & collect 14 tradable cards

    $8.99

    exclusive

    NASA Mars Perseverance Rover
    8 left

    NASA Mars Perseverance Rover

    Build & code your own NASA-themed, AI-powered rover

    $349.00

    new

    Bit Expansion - Buttons
    11 left

    Bit Expansion - Buttons

    Unlock a unique Bit game & collect 14 tradable cards

    $8.99

    new

    Artemis Watch Strap: Violet Supernova
    9 left

    Artemis Watch Strap: Violet Supernova

    A complete burst of color. Durable woven nylon makes a statement.

    $9.99