Model: MS6508 - Color: Dark Green + Grey - Plastic case material - 1.7" LCD display - High quality digital sensor - Ambient Temperature: -20 ~ +60'C / -4 ~ +140'F - Ambient Temperature Accuracy: +/-1'C (0~45'C) / +/-1.5'C (-20~0'C 45~60'C) - Ambient Temperature Resolution: 0.1'C/'F - Update rate: 400ms - Relative Humidity: 0~100%RH - Relative Humidity Accuracy: +/-3%RH (20%~80%) / +/-4% (0%~20% 80%~100%) - Update rate: 400ms - Wet Bulb Temperature: -20 ~ +60'C / -4 ~ +140'F - Wet Bulb Temperature Accuracy: +/-1'C (0~45'C) / +/-1.5'C (-20~0'C 45~60'C) - Wet Bulb Temperature Resolution: 0.1'C/'F - Update rate: 400ms - Dew Point Temperature: -50 ~+60'C / -58 ~ +140'F - Dew Point Temperature Accuracy: +/-1'C (0~45'C) / +/-1.5'C (-50~0'C 45~60'C) - Dew Point Temperature Resolution: 0.1'C/'F - Update rate: 400ms - Powered by 4 x AAA batteries (included) - Comes with Chinese manual