Real-time monitoring: This shower thermometer ensures you always shower at the right temperature, eliminating concerns about water being too hot or cold. High precision: Features a built-in sensor with a range of 5-85��C/41-185��F and ��0.5��C accuracy. Switch between Celsius and Fahrenheit display. Battery-free operation: Self-powered with a built-in generator, no batteries needed. Includes a 1/2-inch nut for compatibility with most showers. Easy-to-read display: 360�� rotatable design with LED screen and color-coded indicators (blue/green/red) for clear visibility from any angle. Timer function: Set time up to 99:59 minutes for energy efficiency. Ideal for households with infants, children, or elderly members. Specifications: Material: ABS + PC plating Size: 8.1 x 8.06 x 3 cm / 3.19 x 3.17 x 1.18 inches Measuring range: 5-85��C / 41-185��F Nut size: 1/2 inch Package includes: 1 x Shower thermometer 1 x Waterproof washer 1 x User manual Note: Slight size variations may occur due to manual measurement.