Input: DC 3V to 40V (input voltage must be higher than the output voltage of 1.5V or more. Cannot boost)Output: DC 1.5V to 35V voltage continuously adjustable, high efficiency and maximum output current is 3A.Features: all of the use of SANYO solid-state capacitors, 36U thickening of the circuit board, high Q value of large power inductorsSize: 45 (long) *20 (wide) *14 (high) mm (with potentiometer)