Digital Hourglass - 1 minute to 30 minutes Metal Earth secrets and cryptography while designing

secrets and cryptography while designing our new intriguing Cryptex  model

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Pieces: 632

Digital Hourglass - 1 minute to 30 minutes Metal Earth secrets and cryptography while designingUnique Pretty Design: This is a beautiful electronic hourglass, a decorative gift for you. The suite adopts a double layer PCB, and the circuit consists of 128 LED lamps. Under the MCU program, it displays hourglass images. The brightness is adjustable and it can be used as decoration for small night lights Convenient and Practical: Long press for 3 seconds to turn on off the timer, you can set it from 1 to 30 minutes at any time. After the timing is