【11'' LED LARGE DISPLAY】Diemmern large screen decibel meter features 11" LED display with adjustable brightness & decibel meter chip, i.e. Noise Meter + Temperature Meter + Humidity Meter + Clock + Noise Level Indicator, better for your life and work. 【Convenient Charging】The decibel meter is powered by a built-in 2000mAh Li-ion battery, comes with a 9.9-foot USB charging cable, and the plug is included in the package, so you don't need to look for another plug to charge it. You can do it anytime and anywhere. Battery life is 3~5 days, long standby time only need to charge once a week. [The product is calibrated and tested and sent out, usually out of the box the battery is in a non-full state, please connect the charger to keep it fully charged before turning it on and using it.] .
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