LCD can display input/output voltage, output current/output power/output capacity/output time; adjustment, and fast, can boost and lower voltage, output voltage can be adjusted at will from 0.5-30v, limit current 0-4a can be adjusted at will; Anti-reverse connection protection of input end, which will not burn out; Anti-reverse irrigation at the output end, no additional anti-reverse irrigation diode is needed to charge the battery; The module can be set to open/ by default; Colour:Photo Color Material:plastic Package Contents: 1 x Converter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.