【Precise Water-proof Verification】This is a smart hydrostatic pressure tester with a digital display panel for clear and convenient parameter viewing and adjustment. Water pressure is generated simply by manually pressing the rubber bulb. Its fast-response design allows you to quickly obtain results by observing the water column height in the transparent tube. 【High Efficiency and Convenience】The testing process is fast. By observing the change in the water column height in the transparent tube and the corresponding value displayed on the instrument, you can accurately determine the test results, greatly saving time and operating costs. 【Testing Capabilities】This tester is suitable for a variety of materials, ensuring accurate readings. It withstands a maximum water pressure of 20,000 mmHg. Whether for everyday fabrics or professional outdoor gear, it is an essential tool for anyone who needs a reliable, high-quality testing solution. 【Service】: We are very sorry for the shopping experience you have experienced. If you have any problems with the goods you received, please contact us and we will serve you 24 hours a day. 【Versatile Applications】This product is an essential tool for evaluating and improving the water-proof performance of various products (including raincoats, tents, down jackets, backpacks, and various fabrics), making it for manufacturers, quality control personnel, and outdoor enthusiasts.