Lumen Electronic Jewelry Store has closed down. :( Thank you so much for an amazing 8 years. See our final blog post for more details. FYI the listings remain visible for information purposes.

Blinky Square Necklace


This twinkling LED Square is based on the same electronic circuit as our popular skull, rearranged into an efficient abstract pattern. Each piece has two LED lights connected to 4 tiny solar cells. So your necklace will charge up and blink in an ever-so-captivating manner, no batteries required. But that’s not all! If you’re a geek on the run (or just forget to solar charge your bling), it also comes with a micro-USB connector. Rock!

Size: 1″ square, about the size of a quarter.
Solar Charge Time: 25 minutes
Optional USB Charge Time: 2 minutes
Lifespan in Darkness: 5 hours



And don’t fret if you’re not super tech-savvy — we’’ll include all the details and directions with the piece, so you can get the very most out of your jewelry. Sealed sealed in epoxy to protect it from life and hung on a 18″ gunmental stainless steel chain with 3″ extension.

Operation:  I’m ALIVE!                                                                                                                    

  1. Flip switch to side labeled “Direct”. The power storage capacitor is now disconnected and I get my energy directly off the surrounding light. Sunlight is best, but not the only source I like.
  2. Flip switch to side labeled “Store” to store solar energy or run off internal storage.  The capacitor is now connected to the circuit.
    1. Solar – find a light source I like and leave me under it for 20-30 minutes.
    2. Optional USB – plug me in. Wait 2 minutes till I’m really, really  If the LED’s are constant, I’m full.
  3. Store my energy for later by flipping the switch to “Direct”.

Endurance: When flipped to “Store” I’ll run about 6+ hours on a full charge in darkness. In “Direct” I’ll blink as long as the room is bright.

Additional information

Weight N/A
Dimensions N/A

Purple and Gold, Blue and Silver

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