Specification: * Measuring range: 30dBA~130dBA * Accuracy: 1.5 dB * Frequency range: 31.5Hz~8.5KHz * Frequency weighting: A * Digital Display: 4digits * Resolution: 0.1dB * Sample rate: 2 times/second * AAA*3 Battery,not included * Operating condition: 0~40 10~80%RH * Storage condition: -10~60 10~70%RH * Weight: 144g * Dimension: 56.1*177*36.03mm Package Included: 1. 1 x Sound level meter 2. 1 x Operation Manual 3. 1 x Sponge Ball