Look no further. Excellent product quality， that's solidly built. Best of all， its very affordable price. Buy this instant.<br />Size: about 57 x 38 x 13 mm <br />Measuring range: -50°C to 70°C <br />Resolution: 0.1°C (> -20°C) / 1.0°C (≤ -20°C) <br />Power supply: 1.5V cell battery (LR44)<br />Cable length: 90 cm <br />Accuracy: ±1°C <br />ON: Press FSW button to turn it on<br />OFF: Press and hold FSW button for 4s to turn it off <br />Clock setting: <br />Press FSW button to switch the LCD to time display <br />Press HR button to adjust hour; press and hold it for 2s to increase automatically <br />Press MIN button to adjust minute; press and hold it for 2s to increase automatically <br />Indoor and outdoor temperature measuring switch: <br />Measure the indoor temperature after turning on for 2s， and LCD displays IN.<br />Press FSW button to switch to outdoor temperature measuring， and LCD diplays OUT. <br />1 x Thermometer<br />1 x English user guide <br />In original package<br /><img src="http://img6.eachbuyer.com/x6/p22/wc86_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x6/p22/wc86_4.jpg" />