1. Use high-quality materials with guaranteed quality     2. Large screen display, clear status, simple operation and smooth experience     3. Integrated frosted panel, high-quality aluminum alloy knob cap     4. Intelligent temperature control fan, automatic start and stop; Thickened radiator, two-way ventilation     5. Delicate appearance and convenient use          Colour:Gray     Material:PCB+Metal     Size:7.9x4.3x2.5cm          Package Contents:     1 * Charging Modules          Only the above package content, other products are not included.     Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.                             1 PCS 35W DC CNC Antihypertensive Boost Converter Gray PCB+Metal Solar Charging Module                        1. Use high-quality materials with guaranteed quality     2. Large screen display, clear status, simple operation and smooth experience     3. Integrated frosted panel, high-quality aluminum alloy knob cap     4. Intelligent temperature control fan, automatic start and stop; Thickened radiator, two-way ventilation     5. Delicate appearance and convenient use          Colour:Gray     Material:PCB+Metal     Size:7.9x4.3x2.5cm          Package Contents:     1 * Charging Modules          Only the above package content, other products are not included.     Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.