The watch-type emergency button is mainly used in places where emergency assistance is needed. The style is novel, elegant and elegant, easy to carry and simple to use, especially suitable for the elderly. Can be equipped with security alarm host, smart home host Applicable to nursing homes, hospitals, nursing homes, etc., as well as households. Fit many occasions: Suitable for indoor and outdoor use, such as home, office, bedroom, bathroom, kitchen, living room, etc. watch design, easy to carry and use; the button delay trigger, to avoid false positives;Low power consumption and long battery life. working voltage: DC3V; working current: 13mA; Working frequency: 433.92MHz Frequency deviation: 0.2MHz; Transmitting power: 10mW; Working distance: 10-100m Modulation mode: ASK; Working temperature: -20 C ~ +70 C. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:White Material:ABS Package Contents: 1 x Watch style pager Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.