Visol Modern Circular Digital Hygrometer<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Digital Hygrometer with Precise Readout; Color Coded Humidity Marker (Green showing Ideal Humidity) Shows Digital Temperature; </span></li><li><span class="a-list-item"> Battery Included (G13A Micro Cell 1.5 V Alkaline Button Cell); Three Black Button on the Back for Calibration (C = Reset， + = Max/Min， - = C and F) </span></li><li><span class="a-list-item"> 2.55 inches (Diameter) x 0.55 inches (Thickness); Approx. Weight: 0.1 pounds; Included Magnetic Plate with Adhesive; </span></li><li><span class="a-list-item"> Can be Easily Attached to Any Cigar Humidor; Made with Plastic </span></li><li><span class="a-list-item"> Comes Packaged in Cardboard Box </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/517qKyPo%2B%2BL.jpg" noproxy>