Features: This instrument is a kind of high-precision digital skin moisture monitor that adopts the latest bioelectrical impedance analysis (BIA) technology. Backlit LCD display, can be used at night. The digital skin moisture monitor can be used as a marketing tool by cosmetologists or beauty salons. Highly sensitive, high-accuracy probe, closely monitors your skin's moisture and oil levels. Easy operation and light weight to carry. You can effectively detect skin water deficiency, you can analyze your skin condition in time. Specification: Item Type: Digital Skin Moisture Detector Operating Relative Humidity: Measurable Humidity Range: 0~99.9% Size: approx. 17 * 3 * 2.3 cm / 6.7 x 1.2 x 0.9 inch Battery: 2 x AA battery (not included) Weight: approx. 169 g / 6 oz Package List: 1 x Digital Skin Moisture Detector INGREDIENTS defaultSimple operation: warn the skin of lack of moisture and inform the current skin condition. The operation is simple, just open the lid of the moisture tester and then press the button to run the test. Convenient use: precision work: high-sensitivity and high-precision probes can be used to test skin moisture, skin fat and skin type, and also detect fluorescent substances, which can analyze your skin condition in time. Easy to carry: Available at night: backlit LCD display, can be used at night to allow you to check the value of the last test, the skin moisture reference value: (normal moisture value should be greater than 32, otherwise the tester will emit a red light, to remind you of hydration). Digital skin moisture monitor can be used as a marketing tool for cosmetologists or beauty salons. Easy to use: environmental protection and energy saving: use 2 AAA batteries (not included), about 17*3*2.3cm, compact and portable, made of high-quality environmentally friendly materials, durable, safe and sturdy, suitable for home use , travel, beauty salon and professional skin disease hospital. High Accuracy: This instrument is a kind of high-precision digital skin moisture monitor, adopting the latest BIA (Bioelectric Impedance Analysis) technology. High-sensitivity, high-accuracy probe closely monitors your skin's moisture and oil, and effectively detects the skin's water shortage, can timely analyze your skin's condition.