Check the listing for details. Sound Level Meter Noise Tester 30-130dBA 20000 Data Record Bluetooth App. Condition: New. Listed at 42.00 USD. Features :Sound Level Meter possesses the following features:1.The digital sound level meter is equipped with APP for mobile phone which communicates with the meter through Bluetooth and offers various operations of sound level meter. The meter has recording function, up to 20,000 data can be recorded.2.Sound level measurement(dBA).3.MIN/MAX/ Lock current value.4.Hold the measurement data.5.LCD backlight function.6.Manual/auto shutoff.7.Backlight alarming.Specifications :◆ MODEL: WT85B.◆ Measuring Range:30~130dBA.◆ Accuracy:±1.5dB.◆ Frequency Response:31.5Hz~8KHz.◆ Frequency Weighting Features: A Weighting.◆ Resolution:0.1dB.◆ Working Temperature and Humidity:0~40℃，10~80%RH.◆ Storage Temperature and Humidity:-10~60℃，0~90%RH.◆ Power Source:3*1.5V AAA Batteries (NOT INCLUDED).◆ Weight:96.38g(Excluding Battery ).◆ External Dimension:56.1*177*36.03mm. Note: we'll ship this item via SpeedPAK to US, CA and AU, the delivery time is about 3 weeks; For other countries, we'll ship it via registered air mail of Post, usually the delivery time is about 40 days. If you want express mail service, please contact us for extra postage in advance.