1. Temperature range: -20~60℃ (-4℉~140℉), error: ±0.5℃; 2. Humidity range: 10~99%RH, error: ±3%RH; 3. Temperature and humidity are refreshed every 10 seconds; 4. Comfort: Orange, green and blue color bars are displayed. When the humidity is ≤29%, the triangle points to DRY; when 30% ≤ humidity ≤ 70%, the triangle points to COMFORT; when the humidity ≥ 71%, the triangle points to WET; 5. Display time (AM, PM: displayed in 12-hour format, not displayed in 24-hour format), date and week on the same screen; Function buttons: three in total, SET (setting), +/℃/℉ (increase, Celsius/Fahrenheit conversion), -/12/24 (decrease, 12/24-hour format); Power supply method: Use two CR2032 batteries (included) to supply power in parallel, doubling the standby time. size: 93 x 73 x 19mm Material: ABS colour: Black Package Contents: 1 x thermometer 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.