Dial: 0.3MM aluminum sheet printed with black text on white background. Measuring function parameters: Thermometer: -30-50, accuracy: +/-2 Hygrometer: 0-100%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 Color: White & Gold Material: Brass + Plastic Package Contents: 1 x Air pressure gauge 1 x Thermometer 1 x Moisture meter 1 x 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm