Main Function: Sound level meter Color: Coffee cream Range: 35~130dB Accuracy: +/-1.5dB Frequency range: 31.5HZ to 8.5KHZ Frequency weighting: A Max hold function: Yes Sampling time: 2 times /sec Power supply?9V batteries (not included) Dimensions: H: 33 x L: 134 x W: 50 (mm) Certification: CE, FCC, RoHS Package Contents Sound level meter User manual- English A mini version of our popular H53 High Accuracy Decibels Sound Level Meter (30 to 130 Decibels), the H65 is a wonderful tool for safety engineers and sound quality controller. It provides a reliable, accurate and fast way to measure sound level and calculate the decibel of factory, office, traffic, family, audio system, etc. Featuring a wide dynamic range from 35 to 130dB, it can be used in a variety of environments to get the right response for the human ear. Just press one button and the sound level will instantly show up on the LCD display. It"s a practical little tool great for noise pollution monitoring, home theater setup, health and safety compliance, vehicle noise testing etc. Professional functions, user friendly and convenient. At a Glance... 4 Digits display Max hold function 35 dB to 130 dB dynamic range 0.1 dB resolution IEC 651 Type II