- 3-in-1 mechanical weather station: a 130 mm diameter aluminum unit that combines thermometer, hygrometer and barometer in one compact device, battery-free. It measures temperature from -30 C to 50 C, relative humidity from 0 to 100% RH, and atmospheric pressure from 970 to 1050 hPa. - Precise readings: temperature accuracy +/- 2 C; humidity accuracy +/- 5% RH (40-70% RH range); pressure accuracy +/- 5 hPa (970-1040 hPa range). Reliable ambient climate data without power. - Weather trend forecast: analyzes short-term trends in temperature, humidity and pressure to indicate upcoming weather changes, helping you plan activities. - Premium aluminum construction: made of high-quality aluminum with attention to detail; reliable performance and a refined look in any room. - Use scenarios: ideal for the living room to monitor family comfort; in a home office to anticipate weather shifts; in a greenhouse or craft room to manage microclimate. - Placement options: 130 mm diameter; battery-free; suitable for desk, shelf or wall display.