Features: This wireless nurse call button features one touch emergency alerts, long time standby for reliable safety in hospitals, schools, or homes. BuiltS with lightweight ABS/silicone materials and IPX7 waterproofing, the wrist alarm combines comfort with elderly friendly circular touch button design. Ideal for seniors requiring fall detection, children needing quick assistance, or patients seeking instantly nurse communication in healthcare facilities. Perfect for classroom emergency notifications, elderly homeS care monitoring, or hospital patient nurse coordination through its long range wireless nurse call system. The magnetic charging school call system eliminates frequent charging hassles while maintaining clear signal transmission across multi floor environments. Specifications: Component:ABS Size:Approx.60x14x40mm/2.36x0.55x1.57inch Operating frequency: 433.92MHz Charging voltage: DC5V Working voltage: DC3.7V Battery capacity: 300mAh Working frequency:433.92MHz Package Includes: 1 Set Wireless Caller note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.