Real 4G version, also 5G, 3G and 2G Powerful magnet, no need install Fall-off Alarm:The fall-off alarm function will be enabled automatically. Once someone take it away or the device dropped, the GPS will send alam messoge out Low consumption and kinds of sleeping mode, power saved, long battery life; theft: built sensor, it will send sms or call alert once detect motion; -fence, it will send alert also once move out the pre-setted fence; Easy gsm sms tracking with street name in sms text; Free web based tracking platform supporting: no monthly or yearly subscription, FREE forever; Free monile Application supporting: no monthly or yearly subscription, FREE forever; Rechargeable good battery 5000mAh and kinds of sleeping mode Waterproof level IP65 -fence alert,Overspeed alert,,Low battery alert Real-time tracking &-checking User-account to monitor/manage more than one GPS at the same time. Specifications:tkstar TK905gps tracking devices for cars Model name:TK905-4G :90mm x 72mm x 22mm/ 90mm x 72mm x 32mm Weight:168g / 235g Color:Black GPS sensitivity:-159dBm GPS accuracy:5m Time To First Fix: Cold status 35-80s Warm status 35s Hot status 1s Wall charger:110-220V input 5V outputGSM Alarm System Battery:Built-in 3.7V 5000mAh (TK905-4G) Li- battery Standby: 30days Storage Temp.:-40C to +85C Operation Temp.:-20C to +55C Humidity:5%--95% non-condensing Network:LTE/WCDMA/GSM/GPRS Package List: 1 * TK905-4G (with 5000mAh) 1 * User Manual 1 * Charger 1 * USB Cable 1 * Box (No Sim Card and Card included)