Main features: 4G LTE +3G WCDMA+2G GSM. Waterproof IP67GPS+Beidou positioning, accuracy up to 5 m. WIFI positioning, accuracy up to 30mWeb platform/ Phone App for positions check. Pill reminder and PedometerFall detection with alert. SOS urgent call for help. Speed dial call. Ring to find the deviceHistorical route display/-fence. Low battery/ changing alert. Talking clock for real time voice tellingProduct specification:Model A:4G-FDD:Band 1/2/3/5/7/8/203G-WCDMA:Band 1/2/5/82G-GSM:Band 2/3/5/8Model B:4G-FDD:Band 1/2/4/5/7/12/13/173G-WCDMA:Band 1/2/52G-GSM:Band 2/5GPS locating time:30sec with cold (open )29sec with warm (open )5sec with hot (open )GPS positioning accuracy:5-15m (open )WIFI positioning accuracy:15-100m(Under WIFI range)Working temperature:-20 ~ +70Working humidity:5% ~ 95% RH Net weight: 45gBattery:1000mAhScreen Size:Under 2 Inches Feature:Internet ConnectedBattery Life:30 Hours & UpItem Size:61 x 45.5 x 18.5mmModel Name:RF-V50 4G GPS Tracker:12VGps Module:YesGPS type:GPS TrackerAlarm :SOS alarmBattery Type:lithium batterybattery life:18 HAntenna type:Ceramic Active AntennaExternal power supply form:Chargecolor:BlackMaterial:ABSPackage Contents:1 x GPS TrackerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.