Specification:<br />Product name:LD30 Boost 1\/2 AA Cell Circuit Board<br />Modes: low(7mA),niddle(100mA),high(500mA)<br />Size:diameter 17MM x height 8MM<br />Suitable for 1 or 2*AA batteries<br /><br />Features:<br />Tinned leads<br />Reverse polarity protection<br />Double sided layout element<br />Low voltage protection: The light will step down to low mode and start flashing<br /><br />Package included:<br />1 x LD30 Boost 1\/2 AA Cell Circuit Board