Note: 1;The SOS button needs to be within the Wifi router distance range(within 10-15m); The distance varies with the environment, The maximum distance between the button and the router should be controlled at approximately 50 feet（15M); 2. Supports 2.4GHz Wi-Fi Only How to connect to the App: Press and hold the button for about 10 seconds, and the LED indicator light will slowly flash, then connect to the WiFi and Smart App When the button is pressed, The fastest delay is 3 seconds, and the reporting time may vary depending on the environment Specifications: Material: ABS Standby Current: 0.1μA Average Current: 12mA Internal Battery: Polymer battery 3.7V / 400mAh Charging Duration: ≤ 1 hour Wi-Fi: 2.4G APP: Tuya/Smart Life Item Size: 50 * 50 * 16mm / 1.97 * 1.97 * 0.63in Item Weight(each button): 28g / 0.98oz Package Size: 7 * 6 * 3cm / 2.76 * 2.36 * 1.18in Package List: 1 * Emergency Button 1 * Neck Strap 1 * Adhesive Tape 1 * Type-C Cable 1 * Manual (English)