BAFX Products&Acirc; - Decibel Meter/Sound Level Reader - W/Battery! FEATURES - Automatic backlit display for easy visibility in dark situations. MAX/MIN hold feature for measuring absolute high/low peaks. +/- 1.5dBA with 0.1dBA resolution & measuring range of 30-130dBA. Automatic power off feature to save battery life (easily disablable). Sampling rate of 2x/Second. Up to 30 hours of continuous use on a single 9V battery. EASY - Super easy and simple to use. All readings are measured in dBA, the most common decibel reading for most all applications, home and commercial. Simply turn on and get a reading! Large easy to read backlit display with a MAX/MIN function to know the MAX and MIN dB levels recorded by the meter. AFFORDABLE - Our sound meters are designed with the general consumer in mind, made with the features required by most users while eliminating uneccessary features that only add to the cost that will not normally be used by most consumers. This way you will only be paying for what you really need in a sound meter, a decibel reading. VERSATILE - A great basic sound meter for use across the spectrum in many different fields from music recording, neighbor noise complaints, industrial settings, office settings, speech therapy & more. WARRANTY - 1 Year no hassle manufacutrer warranty against all manufacturing defects with friendly and responsive USA based support staff who will be happy to help with any and all questions or concerns!