1. Clock not original wood ! Material:MDF+PVC.<br /> <br />    All original wood surface is difficult to display digital effects.(PS:The clock skinning process by hand and the distant transportation so hard to avoid have some little flaw .)<br />​<br />2.Battery is spare and it only can work about 3-7 days ， so it's better use cable . <br /> <br />3.The temperature always have 1-3 degrees difference to professional thermometer .Humidity have 20% difference.<br /> <br />( PS:The temperature from the micro-digital electronic sensor chip， when you get clock please wait for some time and reset the clock .If you open sound control the sensor didn't work so the temperature not correct.)​