Feature: 1. 6 IN 1 MULTIFUNCTIONAL AND LCD HIGH DEFINITION DISPLAY: This large screen decibel meter has a 9.5x5.3cm/3.7x2.1in LCD high definition display, with multiple data displayed on the same screen, which means you will have a noise meter, temp meter, hygrometer, PM2.5, 1.0, 10 detector. In addition has a clock, date, battery display on the top, providing convenience for your work and life 2. BEAUTIFUL AND PRACTICAL: Not only a detector, but also a work of art. 145x78x97mm in size, compact and minimalist, the main body adopt artistic bending design, with each corner being an arc and each arc being a golden ratio. A perfect combination of fashion and science, and placed on the desktop is also an extremely beautiful artwork. Helping you create a healthy environment while also allowing you to enjoy the joy of beauty every day 3. HIGH ACCURACY: The sound level meter uses intelligent air semiconductor sensor to test the decibel temperature and humidity values. Compared to ordinary sensors, more sensitive, accurate, and stable. The measurement range is 30‑130dB, with an accuracy of ± 1.5dB; Humidity range of 20~85%, accuracy of ± 4%; Temperature range 14~122℉, temperature units can be switched between ℃/℉, accuracy ± 1.8℉ 4. EASY TO USE: This smart decibel meter is ready and can be used when turned on. Long press the power button to turn on or off, click the power button to enter the next item, double click the power button to set the time and date, and click the left and right arrows to adjust. The included paper user manual can make it easier for you to use 5. WIDE APPLICATION: This noise detector is a great tool for checking, monitoring or controlling and testing the sound level of any environment and can be applied to noise engineering, product quality control, health prevention and treatment, etc. This large LED display decibel meter can be hung on the wall or placed on a table, making it an ideal noise meter for testing sound levels in classrooms, studios, major traffic routes, factories, construction sites, homes, offices, etc. 6. CHARGING FRIENDLY: This decibel meter come with a built in 3000mAh lithium battery power supply, providing an ultra long battery life. You can place anywhere you want and charge anytime, anywhere(come with a USB cable). Battery life of 3‑5 days, ultra long standby, only need to be charged once a week Specification: Item Type: Decibel Meter Material: ABS Noise Measurement Range: 30~130dB Temperature Unit: ℃/℉ switchable Battery: 1 x 3000mAh rechargeable lithium battery LCD Display Size: Approx. 9.5 x 5.3cm / 3.7 x 2.1in Size(LxWxH): Approx. 145 x 78 x 97mm / 5.71 x 3.07 x 3.82in. Package List: 1 x Mainframe 1 x USB Cable 1 x User Manual Note: 1. Due to different environments, the deviation of actual measured values is 0~15%, which is within the normal range.2. After calibration and testing, the product will consume a certain amount of electricity when shipped. Therefore, batteries that are ready to use out of the box are usually not fully charged. Please connect a charger before opening and using to keep the battery fully charged.