"The main function: 
2G GSM universal network
Waterproof grade IP67
GPS+Beidou global satellite positioning, the outdoor accuracy can reach 5 meters
WIFI positioning, indoor accuracy up to 30 meters
Website platform/mobile app to query location information
Solar automatic charging (off state, automatic power on after sunlight)
Locator removal alarm
Locator vibration alarm
SOS one-click help
High-frequency sound alarm/sound search
Track playback/electronic fence
Low battery/changing card alarm
High Power LED Warning Light" "frequency band:
GSM frequency band: Band 2/3/5/8 GPS
Positioning time: 30sec after cold start (outdoor open sky)
Warm start 29sec (outdoor open sky)
Hot start 5sec (outdoor open sky)
GPS positioning accuracy: 5-15 meters (outdoor open sky)
WIFI positioning accuracy: 15-100 meters (with WIFI signal coverage)
Working temperature: -20℃ ~ +70℃
Working humidity: 5% ~ 95% RH
Product size: 65(L)x55(W)x26(H) mm, 116g
Battery capacity: 4000mA                                                    Package size: 8.3*8.3*6.3cm,204g                                            Carton size: 35.5*25.5*19cm,40pcs/ctn,G.W:9kg" GPS+WIFI+LBS