1. TEST: With it, you can check if your skin is too dry or too oily anytime, anywhere. There is no need to go through complicated skin testing machines to get the skin condition. 2. LIGHTWEIGHT PORTABLE:This skin tester, designed like a pen, is small, lightweight and easy to carry, you can carry it in your handbag. 3. ACCURATE DATA: Suitable for checking data before and after using skincare products, you will notice the difference. If you use different skincare products, you will get different data. 4. BEAUTY CONSULTANT: Skin analyzer, your exclusive beauty consultant, helps you distinguish the moisturizing effect of skin care products, focus on skin hydration and maintain a young and look. 5. APPLICABLE SCENARIOS: This multifunctional skin tester is suitable for home, beauty salons, spas, and even professional skin hospitals. Professional and accuracy. Specification: Item Type: Skin Care Water Oil Tester Material: ABS Product Supporting Battery Type: 1 x button battery Product Matching Battery Model: CR2032 Product Matching Battery Capacity: 100mAh (shipped with a matching battery) The product has a built in battery installed inside, and will be shipped with a matching battery. How to Use: 1. Press SCAN key once, the backlight and Bi tone will light up and the LCD display data will flash. 2. When the LCD data is zeroed (i.e. the double LCD display is 00.0%), we enter the testing process. 3. Hold the probe perpendicular to your skin and close to it (remember to press the probe as much as possible). After about 3 seconds of the Bi tone, the LCD will display both moisture and oil content percentages. 4. Press SCAN at any time, it will enter the operation preparation process, then you can retest your skin. 5. 20 seconds after the test, the backlight will turn off, 40 seconds without any operation, the analyzer will shut down automatically. Common Problems:. 1. The dual LCDLIGHTWEIGHT PORTABLE:This skin tester, designed like a pen, is small, lightweight and easy to carry, you can carry it in your handbag. BEAUTY CONSULTANT: Skin analyzer, your exclusive beauty consultant, helps you distinguish the moisturizing effect of skin care products, focus on skin hydration and maintain a young and look. TEST: With it, you can check if your skin is too dry or too oily anytime, anywhere. There is no need to go through complicated skin testing machines to get the skin condition. APPLICABLE SCENARIOS: This multifunctional skin tester is suitable for home, beauty salons, spas, and even professional skin hospitals. Professional and accuracy. ACCURATE DATA: Suitable for checking data before and after using skincare products, you will notice the difference. If you use different skincare products, you will get different data.