Product Size:270 x 118 x 35mmLed Screen displayDetection for Noise: Electret Condenser microphoneConcentration unit for Noise: dBMeasuring range: 1-95dbaColor: black+whiteMaterial: ABSTemperature unit: CelciuPower supply:rechargeable -battery 2000mah,includding USB Chargeing cableExceeding Alarming with auto detection and auto measuringScreen brightness can be adjusted by handscreen ,Wall mount designThis product is an environmental quality monitor that detects noise, temperature and humidity. Information technology combines sensors with real-time monitoring of noise, temperature and humidity on monitors.Package Contents:1 x Decibel MeterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +- 1-3cm.