Features:  Large LCD backlight display for clear reading, convenient to use at night.  Wide measuring range: 30-130dBA, Fast Responding.  Sound level measurement with stable and reliable performance.  Min./Max./Data Hold function and OVER warning sign of over range measuring.  Low battery indication, manual/auto shut off.  Equipped with sponge ball.   With mounting hole of tripod, allowing to be placed on the stand, easier measuring when your hands are busy.  Portable and easy to use，suitable for sound quality control in factory, traffic, car, baby room and audio system office, home, school and construction site.    Specifications:  Brand Name: Meterk  Color: Black  Material: ABS Plastic  Measuring Range: 30-130dBA  Accuracy: ±1.5dB  Resolution: 0.1dB  Frequency Response: 31.5Hz to 8KHz  Frequency Weighting Features: A Weighting  Display: LCD Display  Over Range: LCD Show OVER  Power Supply: 3 * 1.5V AAA Batteries(Included)  Operation Environment: 0-40℃ 10-80%RH  Storage Environment: -10-60℃ 0-90%RH  Item Size: 56 * 36 * 177mm / 2.20 * 1.42 * 6.97in   Item Weight: 122g / 4.32oz (Batteries Included)  Package Size: 22 * 12.2 * 4.4cm  Package Weight: 210g    Package List:  1 * Sound Level Meter  1 * Sponge Ball  1 * User Manual (English + French + German + Italy + Spanish)