Product Parameters: Material: ABS Color: White Test head: Platinum probe Memory function: 10 times Power supply: Two AAA batteries 3V (no include battery) Features: This detector integrates advanced moisture testing, oil analysis and skin elasticity testing functions, and uses upgraded platinum probe technology to ensure that the test process is fast and accurate, allowing you to instantly grasp the real-time status of your skin and provide a scientific basis for personalized skin care solutions. Equipped with an advanced test memory system, it can automatically save and display the results of the last three tests, allowing you to easily trace back historical data, compare skin change trends, and track skin care results, helping you discover potential skin problems and adjust skin care strategies in time.