Features:
It is designed according to following standards, International Electrician Committee Standard: IEC 651 TYPE 2 & ANSI 1.4 TYPE 2.
With modern compact and portable appearance design.
Accuracy up to 1.5dB.
Maximum value holding function to lock up the maximum reading.
Large LCD screen with digits reading.
Equipped with a sponge ball.
Auto power off design for energy saving.
Auto backlight display.
Portable, easy-to-use and handy instrument for sound quality control in factory, traffic, family, and audio system.

Specifications:
Measuring range: 30-130dBA
Accuracy: 1.5dB
Frequency range: 31.5Hz to 8.5KHz
Frequency weighting: A
Digital display: 4digits
Resolution: 0.1dB
Sample rate: 2 times/second
Microphone: 1/2 inch electret condenser microphone
Max hold: MAX
Power supply: 9V battery (the battery is not included)
Power life: About 30 hours (alkaline battery)
Operating condition: 0-40 10-80%RH
Storage condition: -10--+60 10-70%RH
Product weight: 105g
Package weight: 130g
Product size: 14.2 * 5.3 * 3.5cm
Package size: 15.2 * 6.0 * 4.2cm

Package list:
1 * Sound Level Meter
1 * Sponge Ball
1 * User Manual