Please be noted that we stock our products in UK, and you will get your package in around 2-3 workdays, while there are some other sellers who claim to be UK stock too, but take more than a week (3-5 Days) to deliver, which are usually China stock in fact. Specifications: Screen type: LCD Carbon dioxide Detection Range: 400-5000PPM Carbon dioxide Detection Sensitivity: 1PPM Temp Measuring Range: 0 ~ 50 °C Temp Measurement Accuracy: ± 1 °C Humidity Measurement Range: 0% ~ 99% RH Humidity measurement accuracy: ± 2% RH Charging Modes: TYPE-C 5V Battery: Built-in lithium battery 1200mAh Size: 9 x 7 x 3cm / 3.54 x 2.75 x 1.18inch Screen: 2.8 inch Colors: White/Black Package Included: 1 X Carbon Dioxide Detector 1 X Data Cable 1 X Manual.