Note: 1. Skin lacks water and bright red light, skin moisture is normal and green light;_x000D_2. If Err is displayed during the test, it means that the test probe is not close to the skin surface, please make the probe perpendicular to the skin surface to be tested;_x000D_3. The probe touches the skin, and the screen never scrolls, indicating that the skin is dry and beyond the test range. Please change the part. specification: _x000D_Item Type: Skin Moisture Tester_x000D_Material: ABS+PC_x000D_Battery Type: 2 x AAA batteries (NOT INCLUDED)_x000D__x000D__x000D_Skin Moisture Reference Value:_x000D_The normal moisture value should be greater than 32%, otherwise a red light alarm will be issued to remind you of water replenishment during detection._x000D_Forehead: Normal value: 35%-60%_x000D_Eyes: Normal value: 50%-60%_x000D_Face: Normal value: 35%-60%_x000D_Hand: Normal value: 40%-65%_x000D__x000D__x000D_Skin Oiliness Reference Value:_x000D_Moist skin: 16%-22%_x000D_General skin: 23%-33%_x000D_Oily skin: 34%-63%_x000D__x000D__x000D_Skin Elasticity Description :_x000D_The five smiling faces on the screen correspond to rough, slightly rough, general, slightly flexible, and flexible_x000D__x000D__x000D_Function and Effect: 1. Measure skin moisture. 2. Test skin oil. 3. Test skin texture. 4. 10 groups of memory function. 5. Skin water shortage reminder. 6. Fluorescent agent detection._x000D__x000D__x000D__x000D_Instruction:_x000D_1. Press the power button, a red and green light will be displayed in cycles. After turning on the probe, touch the probe to the tested part, the screen will start to scroll, and a beep will indicate the end of the measurement and the result will be displayed._x000D_2. After the test is completed, the backlight will be off for 10 seconds, and it will automatically shut down after 4 minutes without operation, or press and hold the power button for 3 seconds._x000D__x000D_Fluorescent Agent Detection Pen Instruction: Press the 0 button for about 3 seconds in the power-on state, the tail light of the machine will be on, and the detected object will be illuminated. The blue glowing one contains fluorescent agent._x000D_This machine has 10 sets of test records. To query, touch the 0 button to query the last test record. Each time you touch the 0 button, the record will be displayed in a loop from the last to the tenth time. Features: 1Made of high?quality environmentally friendly materials, durable, safe and solid. 2It can be used to detect skin moisture, skin type, and can also be used to detect fluorescent agents. 3Remind the skin of insufficient moisture and let you know your current skin condition. 4Stylish and portable compact pen design, suitable for family, travel, beauty salon, etc. 510 groups of memory functions, convenient for you to query the value of the last test and the highly sensitive probe provides more accurate test results. PackageList: 1 x SkinMoistureTester 1 x Instruction