Product name: (thermometer, hygrometer, barometer, clock) four-part weather stationProduct materials: brass case (high precision polished and varnished), plastic bottom case, acrylic plastic lens, temperature sensitive hairspring, humidity sensitive hairspring, barometer movement with transmission structure gear driven, 1 second clock movement. Metal pointer.Dial: 0.3 mm aluminum sheet printed with black characters on a white background.Measurement function parameters: thermometer: -3050C, accuracy: +/-2C;Hygrometer: 0RH, Accuracy: +/-5%RH (4070%RH);Barometer: 9501070hPa, Accuracy: +/-5hpa (9801040hPa);Clocks and watches: time error is not greater than +/-1 second/dayProduct size and weight:Thermometer: diameter 98 * thickness 33mm, 0.07kg;Hygrometer: diameter 98 * thickness 33mm, 0.07kg;Barometer: diameter 98 * thickness 36mm, 0.08kg;Clocks: diameter 98 * thickness 32mm, 0.08kg;Packing: white box + bubble bag.