1Compact appearance, its appearance is exquisite and beautiful, lightweight and portable, and can be easily used in different situations. 2Light reminder, it is equipped with 5 LED lights, the test results are clear at a glance, which can help you record and measure data. 3Environmentally friendly design, it can be used without the use of batteries, without cumbersome battery replacement, and has higher practicability. 4Using high quality materials, it is made of durable PC material, sturdy and stable, can protect important internal electronic components, and has a long service life. 5Its continuous use time limit is 60 minutes at 60V AC and 4 minutes at 600V AC. You need to pay attention to the time when using it.