The sound meter does not need to be touched, it can measure the sound quality in various environments, and display the test results quickly and accurately. The sound level meter uses professional high-precision sensors with excellent sensitivity and accuracy. 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 of minimum and maximum Decibels in sound your surroundings 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 Measurement 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 / 3.43oz Package information: Package weight: 247x92x52mm / 9.63x3.59x2.03in Package size: 240g / 8.4oz General Box Package Package included: 1 x sound level meter