Specifications:<br />Size: 17mm*1.7mm*3.3mm<br />Input voltage: 3-4.5v<br />Output current: 1400MA<br />Suitable for: Single core LED flashlight(white\/red\/green\/purple light)<br />Modes:<br />Mode A:Low(10%)-high(100%)<br />Mode B:Low(5%)-Mid(30%)-High(100%)<br />Mode D:Low(5%)-Mid(30%)-High(100%)-Fast trobe-SOS<br /><br />Features:<br />It has automatic shutdown protection and reverse connection protection.<br />Power supply for single lithium or 3AA, input voltage higher than output<br />voltage between 0.2V and 1v,this section can be efficient and constant flow.  <br />Recommended to choose 3.3V or less led ,The brightness are more wonderful.<br /><br />Package Included:<br />1x circuit board