Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Specifications:Converter Type: DC-DCInput Voltage: 5~23V (Best voltage 20V)Output Voltage: 0V~16.5V (Continuously adjustable)Peak Current: 3AMainboard Size: 50mm x 30mm x 12mm(LxWxH)Display Module: STN LCDLCD Size: 37.5mm x 17.0mm(LxW)LCD Accuracy: 1%Conversion Efficiency: 95%Load Regulation S(I): <= 0.8%Voltage Regulation S(U): <= 0.8%Package Included:1x DC-DC step-down power supply adjustable push-button module with LCD display