This product is divided into indoor unit and outdoor unit. The indoor unit can be placed on the desktop, bedside and other places, and the outdoor unit can be placed at the garden, garage, orchard and other places. Indoor and outdoor temperature and humidity are clear, so as to create a nice indoor and outdoor environment. Features: Clear large color screen, all kinds of information are clear, not messy. One indoor unit can be equipped with up to 3 outdoor units. Display weather, temperature, humidity, time, date, week. Two sets of alarms can be set, and there is a sleepy function. The outdoor unit collects the outdoor temperature and humidity data changes, wirelessly transmits them to the indoor unit and displays them on the screen. Power off memory function, no need to reset the time after power on. Specifications: Color: white Material: plastics Indoor unit size: 190 * 143 * 25mm / 7.5 * 5.6 * 1.0in Indoor unit screen size: 127 * 80mm / 5.0 * 3.1in Outdoor unit size: 90 * 60 * 22mm / 3.5 * 2.4 * 0.9in Indoor unit battery: 3 * AAA battery (not included) Outdoor unit battery: 2 * AAA battery (not included) Package size: 280 * 175 * 60mm / 11.0 * 6.9 * 2.4in Package weight: 500g / 1.1lb Packing List: 1 * Indoor Unit 1 * Outdoor Unit 1 * USB Cable