4G Mini GPS WIFI LBS Elderly Tracker Waterproof IP67 Geo-fence Medication Reminder Emergency SOS Smart Fall Detection Locator There are two versions,please according to the network frequency to choose the right version.Version 1:4G-FDDBand 1/2/3/5/7/8/203G-WCDMABand 1/2/5/82G-GSMBand 2/3/5/8Version 2 :4G-FDDBand 1/2/4/5/7/12/13/173G-WCDMABand 1/2/52G-GSMBand 2/5 Main Functions 1. 4G LTE +3G WCDMA+2G GSM2..Waterproof IP673. GPS+Beidou positioning, accuracy up to 5 m4. WIFI positioning, accuracy up to 30m5. Web platform/ Phone App for positions check6. Pill reminder and Pedometer,Fall detection with alert7. SOS urgent call for help,Speed dial call8. Ring to find the device,Historical route display/Geo-fence9. Low battery/SIM card changing alert,Talking clock for real time voice telling Specification Size:57.5(L)*40(W)*16.5H)mmWeight: 45gBattery :1000mAhGPS locating time:30sec with cold boot (open sky)29sec with warm boot (open sky)5sec with hot boot (open sky)GPS positioning accuracy :5-15m (open sky)WIFI positioning accuracy 15-100m(Under WIFI rangeWorking temperature -20 ~ +70Working humidity 5% ~ 95% RH 4G GPS Smart Pendant Waterproof IP67 No need to worry when there's raining or swimming. Multiple Positioning Modes Accurate to the meter, using GPS + Beidou + WiFi + LBS Multiple positioning modes such as base station, the accuracy can reach XX street XX