Clock or Hygrometer: Precision measuring hygrometer, the clock is a metal pointer, and a 1-second precise clock movement.Free nails for easy installation Wall-mounted Type: Light weight, hanging installation, hanging holes on both sides, free nails, suitable for hanging on the wall or placed on the desktop.You can also decorate your home, which is very beautiful. High Quality:Brass case, plastic bottom case, metal pointer is classic and practical. Long-term use does not require any special maintenance work.Hygrometer does not require batteries Measuring Range: Hygrometer 0~100%RHClock travel time error does not exceed +/- 1 second.It accurately predicts the weather or the humidity of the room according to the changes in the environmental humidity, which helps the health of your environment. Wide Range of Use: Suitable for indoor and outdoor use. Very suitable for installation in bedrooms, courtyard gardens, warehouses, living rooms, offices, etc.