Easy to use, one button alarm and push notification to phone, help to prevent accidents. Full process mobile APP monitoring, push mobile phone app notifications when the button is pressed. Built-in rechargeable polymer battery, with low power consumption, and long standby time. After paired with Smart Life APP, it allows you real time controlling by smart phone, and supports shared by multiple people. call button, supports 2.4GHz WiFi, and 10m wireless range. Mini size and , just hang it on neck or to the via double-sided tape. Multifunctional pager is suitable for kids, the elderly, pregnant women, patient, disabled and more. Standby Current:0.1A Average Current:12mA Internal Battery:Polymer battery 3.7V / 400mAh Charging Duration:less than equal 1 hour Wi-Fi 6:2.4G 802.11 B/G/N20/N40/AX20 APP:Smart Life Colour:White Material:Plastic Package Contents: 1 * Emergency Button 1 * Lanyard(The color and style of the lanyard are random, no specification is accepted) 1 * Adhesive Tape 1 * Type-C Cable 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.