Specification Brand : HEEPDD BulletPoint1 : [ Design] Equipped with a 1/2 inch condenser microphone that can withstand one meter landing impact, ensuring long-lasting use. BulletPoint2 : [Clear Display Even in Darkness] Provides clear and easy reading even in the darkness, ensuring visibility at all times. BulletPoint3 : [Fast and Accurate Response] Features response selection with fast 125ms and slow 1-second response rate for precise measurements. BulletPoint4 : [Accurate Decibel Data] Provides accurate data of the sound in your surrounding environment for reliable monitoring. BulletPoint5 : [Min/ Note Taking] Allows you to track the minimum and maximum sound decibels in your surroundings at any time for better analysis. ItemName : Decibel Meter, 30-130 dB LCD Backlight Sound Meter Noise Tester with 1/2 Inch Condenser Microphone for Hotels Conference Halls Home Theaters ItemPackageDimensions_Height : 5 centimeters ItemPackageDimensions_Length : 18 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : sound-and-noise-meters Manufacturer : HEEPDD ModelNumber : HEEPDDx6tvkw8bce PartNumber : HEEPDDx6tvkw8bce ProductDescription : Specification: FunctionsRangeResolutionAccuracy Noise(A Weighting)30~130dB0.1dB±1.5dB Sampling RateFASH 125ms SLOW 1000ms Overload IndicationOL /MIN /MIN Data HoldHold LCD BacklightYes Auto Power Off5min Low Battery Indication3.0~3.5V Battery4.5V Current ConsumptionWorkingmA≤40mA Power offuA≤10uA Working EnvironmentTemperature0~40℃ Humidity≤80%RH Storage EnvironmentTemperature-20~60℃ Humidity≤75%RHBattery: 3 * AAA 1.5V batteries(Not included) Size: Approx. 150 * 50 * 27mm / 5.9 * 2.0 * 1.1 Package Weight: Approx. 132g Packing Included: 1 * Sound Meter