[Easy to use] One-touch alarm and push notification to mobile phone, which helps prevent accidents. Full mobile phone APP monitoring, push mobile phone APP notification when pressing the button.[Mobile phone control] After pairing Tuya with Smart Life APP, you can monitor in real time through your smartphone.[Applicable people] The multi-function pager is suitable for children, the elderly, pregnant women, patients, disabled people, etc.[Small and light] Small and light, it can be used in various scenes. Just hang it around your neck or stick it on the surface with double-sided tape.[Smart linkage] Can be used in conjunction with other smart life APP devices to trigger an alarm. (Linkage devices need to be purchased separately, available in stores)[Extra long standby] Built-in 400 mAh rechargeable polymer battery, low power consumption, long standby time. One charge is more than 3-6 months of use.[Low battery reminder] Enable the low battery reminder function in Tuya Smart App to find out that the battery is too low in time.[Device sharing] Through the device sharing function, it can be shared with every family member.Quantity:1 PCSStandby current:0.1μAAverage current:12mABuilt-in battery:polymer battery 3.7V/400mAhCharging time:less than equal 1 hourWi-Fi:2.4GAPP:Smart Life (tuya)Product size:50x50x16mmProduct weight:25gColour:WhiteMaterial:ABSPackage Contents:1 * Elderly SOS ButtonOnly 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.