Upgraded DesignMore comfortable and easier to play with the STC12C5A60S2 high speed SCM 16*8 dot matrix copper mini USB 3 bit mini digital tube design Easy to AssembleJust need simple soldering and installation to assemble makes it a perfect gift for your kids and friends. Manufacturered by ECUDIS. Easy to UseClassic Background Music ON/OFF humanized keypad arrangement 12mm button better feel. English Manual We provide paper English instruction come with the product. You can scan the QR code in the last picture to get PDF manual. Please contact us at any time for technical support. DIY Electronics Do it by yourself educational and super fun. Pick up your soldering iron and back to the 90s with tons of joy.