Boost constant current LED driver 1)Vin:0.8-3.2V, with 1xAA,2xAA,1xCR123A, 2)Iout: 350mA,400mA, ... 600mA,800mA 3)High efficiency We provide boost led driver board,Specifications ... as below, 1) Input voltage: 0.8-3.2V, 1.5V, 3V powered with 1xAA, ... Paypal is welcome. 1.5V, 3V Boost LED driver board with 1xAA,2xAA,1xCR123A