Welcome to our store! 1,Use high reliability low power microprocessor. 2,Compact design and easy to carry emergency help. 3,Battery life is up to 3 years no need to replace. 4,Using program automatic coding, effectively overcome the drawbacks of traditional remote control coding. 5,Waterproof, anti-pressure, anti-collision automatic control equipment features, safer and more assured. <span style="font-family:Arial font-size:16px ">Features: <span style="font-family:Arial font-size:16px ">Use high reliability low power microprocessor. <span style="font-family:Arial font-size:16px ">Compact design and easy to carry emergency help. <span style="font-family:Arial font-size:16px ">Battery life is up to 3 years no need to replace. <span style="font-family:Arial font-size:16px ">Using program automatic coding, effectively overcome the drawbacks of traditional remote control coding. <span style="font-family:Arial font-size:16px ">Waterproof, anti-pressure, anti-collision automatic control equipment features, safer and more assured. <span style="font-family:Arial font-size:16px ">Specification: <span style="font-family:Arial font-size:16px ">Condition: 100 percent Brand New <span style="font-family:Arial font-size:16px ">Material: ABS <span style="font-family:Arial font-size:16px ">Color: White <span style="font-family:Arial font-size:16px ">Size: approx.59x35x12mm/2.3x1.4x0.5in <span style="font-family:Arial font-size:16px ">Power: Built-in battery <span style="font-family:Arial font-size:16px ">Package List: <span style="font-family:Arial font-size:16px ">1xWireless SOS Emergency Button Alarm Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin