The first picture is a product picture, the other pictures are sample displays Feature: Please note: other accessories are not included. Detection head: contact type Operating temperature: about 5-40°C, relative humidity below 70% Measuring range: 0-99.9% Product size: about length 145mmx width 45mmx thickness 28mm Accurately measure the volume percentage of the skin's comprehensive nutrient moisture content; digital dual display, intuitive and clear; Common problems: 1. After power-on or continuous test, the display shows "00.0%" flashing continuously, and there is no beep, indicating that the probe is contaminated, please clean the test probe; 2. When "UUU" is displayed during the test, it means the test has timed out; 3. When "ERR" is displayed during the test, the test probe is not firmly attached to the tested surface and no data is collected. Please press the test probe vertically on the tested part 4. When LO is displayed when the machine is turned on, it means that the battery voltage is low, so consider changing the battery again; Package Included: 1 * Skin moisture and oil content detector