Description: The wireless SOS emergency calling button makes you easy to call for help. Phone APP conrol,when the emergency button is pressed, the notification will be pushed to your phones. The emergency calling button is lightweight and compact, equipped with a lanyard, easy to carry on the bag. The emergency alarm SUPPORT low-consumption design,convenient to use. Widely used in home, hotel, retirement home and other needed places, Great for elder, children, pregnant women, and anyone in need of extra care. Specification: Model: ZXSOS Communication : for Tuya Support systems: for Android and for IOS Features: One button alarm, push notification Battery: 1 * 3V Button Battery(Built-in) Launch distance: 100m(Open Field) Color: White Material: ABS plastic Size: 43x43x12mm/1.69x1.69x0.47inch Package Includes: 1 Piece SOS Emergency Button Calling Alarm Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you