DIY Kit<br /> <br />1. PCB Board Dimensions: 48MM * 51MM.<br /> <br />2. Power Supply Voltage: 3V - 5V.<br /> <br />Power Supply Solutions:<br /> <br />1. USB power supply can be used with a USB charging cable・ connect the power cord of the kit can be.<br /> <br />2  Chargers. (cell phone・ MP3 charger can)<br /> <br />3  Idle phone battery-powered.<br /> <br />4  Battery-powered.<br /> <br />Package Including:<br /> <br />1Pcs LED Cycle Lamp Suite LED Electronic Production DIY Kits.<br />