USB Portable 2.2" LCD Digital Sound Level Meter w/ 512MB TF Card - Beige (4 x AA)
Material: Plastic housing - 2.2" LCD display - Measuring range: 30~130dBA 35~130dBC - Accuracy: +/- 1.5dB - 4 digits display - Resolution: 0.1dB - Frequency range: 31.5Hz to 8.5KHz - measuring level: 30~80dB 40 ~90dB 50~100dB 60~110dB 70~120dB 80~130dB 30~130dB - 1/2 inch electret condenser microphone - Powered by USB cable or 4 x AA batteries (included) - Accessories include: - 1 x USB cable (140cm) - 4 x AA batteries - 1 x 512MB TF card - 1 x Software CD - 1 x English user manual CD Content: http://m2.img.dxcdn.com/CDDriver/sku.152530.rar