Portable Sound Level Meter: A small and handy tool ideal for noise monitoring, home theater setup, health and safety compliance, vehicle noise testing, etc. HD Digital LCD Display: Large and readable LCD screen with backlight, which can quickly display the measurement, clearly and easily readable. Power Source: 3 AAA batteries (included), low battery indicator, automatic shutdown without operation after 10 minutes, convenient and energy saving. Multi-function: Measuring range from 30 to 130 dBA. Maximum/Minimum/Data Hold function - Automatic shutdown - Battery indicator: directly check the remaining battery. Widely Uses: Designed to meet the measurement requirements of sound quality control in various environments. Ideal for testing music recording, neighbor noise complaints, industrial settings, office settings, speech therapy and more. Specifications: Range: 30-130 dBA. Accuracy: 1.5 dB. Resolution: 0.1dB - Frequency Range: 31.5Hz~8kHz. Sampling Rate: 2 times/sec. Microphone: 1.27cm Electret Condenser Microphone. Quantity: 1pc Note: This does not include other things, the color is based on the first picture, and other pictures only show the effect. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow the deviation. Thank you!