Features: Temperature & humidity sensor can detect real-time temperature and humidity indoors. Powered by a 3V CR2032 battery, low power consumption. Mini size and concise appearance, portable and lightweight. You can place it on desktop, stick it to the wall, or hang it with a lanyard. (Lanyard and sticker are NOT included.) Widely used in living room, bedroom, baby room, office, shop, restaurant and more indoor places. Note: Size and color may be slightly different because of manual measurement and different light conditions. Thanks for understanding. Specifications: Color: White Material: ABS Temperature Measuring Range: -9.9~50 Accuracy: 1 Humidity Measuring Range: 10-90% RH Accuracy: 5% RH Built-in Battery: 1 * 3V CR2032 Button Cell Item Size: 43 * 43 * 13mm / 1.69 * 1.69 * 0.51in Package Size: 6 * 6 * 2cm / 2.36 * 2.36 * 0.79in Package Weight: 30g / 1.06oz Package List: 1 * Temperature & Humidity Sensor