Features: [Rechargeable]: The digital voltage tester comes with a rechargeable battery & charging cable, ensuring that you never have to worry about running out of power during your measurements. [Color Display]: The pocket voltage tester features a large color display screen that for easy reading. You can easily see the results no matter in sunlight or poor environment, allowing for quick and efficient measurements. [Contacted-Measure Voltage]: No need to connect with other test, the voltage detector can test voltage, just let the test probes touch with voltage, and the voltage reading will display on screen. To obtain more accurate test results, it is recommended not to wear gloves when using. [Contacted-Distinguish Live/Neutral Wire]: The electrical tester pen can contacted-distinguish live wire/neutral wire, just let the test probes touch. [Upgraded Flashlight]: The voltage tester pen has a flashlight let you test efficiently and comfortably anywhere, indoors and outdoors, day and night. Specifications: Material: Plastic Measuring Range: 12~300VAC±5.0% Resolution: 1V Sampling Rate: 0.5 seconds Alarm Mode: Backlit, Buzzer Operating Temperature and Humidity: 0~40℃, 0~90%RH Storage Temperature and Humidity: -20~60℃, 0~75%RH Power Supply: Built-in 3.7V 400mA Battery Size: Approx. 16.6x2.8x2.3cm/6.54x1.1x0.91in Function: NCV Test, Live Wire Test, Temperature Test Package Includes: 1x Voltage Tester Pen note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.