DIY DS1302 Rotation LED Electronic Clock Kit 51 SCM Learning Board
New version is coming!! Since 2015.4.16，all Electronic Clock Kit are new versionNot included the box!!!!!!How to use and how to soldering:
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Description:
Size: 81 mm x 81 mm x 1.6 mmPCB thickness: 1.6 mmMaterials: FR4 military levelPCB color: blueDigitalTube display: redPower supply voltage: miniUSB， external connection 5V ，3V button battery for clock chip on the board of the standby power supply
Package included:
1 x Rotation LED Electronic Clock Kit