Usage Tips:Dial: 0.3MM aluminum sheet printed with black text on white background. Measuring function parameters: Thermometer: -30-50, accuracy: +/-2 Hygrometer: 0-RH, accuracy: +/-5%RH (40-70%RH) Barometer: 950-1070hPa, accuracy: +/-5hpa (980-1040hPa) Clock: The running error is no more than +/-1 second/day Product model:T-H-B-C9193 Product name:(thermometer, hygrometer, barometer, clock) four-piece weather station Product materials:brass shell (high-precision polishing and varnishing), plastic bottom shell, acrylic plastic lens, precision temperature-sensitive hairspring, precision humidity-sensitive hairspring, barometer movement with precision gear transmission structure, 1-second precision clock movement. Metal pointer. Product size and weight: Thermometer: diameter 98 x thickness 33mm, 0.07KG; Hygrometer: diameter 98 x thickness 33mm, 0.07KG; Barometer: diameter 98 x thickness 36mm, 0.08KG; Clock: diameter 98 x thickness 32mm, 0.08KG Colour:White & Gold Material:Brass + Plastic Package Contents: 1 * Air pressure gauge 1 * Thermometer 1 * Moisture meter 1 * Timepiece Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.