The sound level meter does not need to be touched, it can measure sound quality in various environments and display the test results quickly and accurately. The sound level meter uses high-precision professional sensors providing excellent sensitivity and precision. Its performance is stable and reliable. Comes with a compact and lightweight design, designed to fit comfortably in your palm, convenient to carry. Sound Level Tester allows you to take note minimum and maximum in Decibels sound around you at Any Given Time Frame. High precision with stable performance and high accuracy, perfect for sound level measurement. Features: Color: Black and Red Material: ABS plastic Frequency weighting: A weighting Digital Resolution: 4 digits and 0.1dB Measuring range: 30 ~ 130dBA Frequency range: 31.5 Hz to 8.5K Hz Microphone: 1/2 inch Electret Condenser Microphone Power supply: 2 x 1.5V AAA battery (not included) Item size: 205x55x30mm / 8x2.15x1.17in Weight: 98g / 3.43 oz Package information: Package weight: 247x92x52mm / 9.63x3.59x2.03in Packing size: 240g / 8.4 oz General Box Package Package included: 1 x Sound Level Meters 1 x User Manual 1 x Pouch Notes: Do not use device in high temperature and humidity environment. Note: This does not include other things , the color is based on the first picture and other pictures only show effect Due to differences between different monitors, picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!