Specifications:The extra-large and analog dial makes it easy to read the measurements.Constructed with a durable quartz material for added strength and corrosion resistance.Can measure temperature humidity of indoor or outdoor.Compact and exquisite, can be a good decor for car, home, office, etc.The thermometer and hygrometer are mechanical structures, no battery required. Item Name: ThermometerMaterial: QuartzFeatures: Time Clock, Air Humidity Measurement, DurableSize: 4cm x 4cm x 4cm/1.57” x 1.57” x 1.57” (Approx.) Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:1 x Thermometer (Time Clock with 1 Button Battery)