The Mini LTE Modem provides cellular internet access for your RealWear headset where Wi-Fi is unavailable. It mounts directly to the headset frame via a short USB-C cable and uses a standard Nano SIM card. With the same IP66 rating as the Navigator headsets, it holds up to dust, rain, and harsh conditions in the field. Supported Bands: LTE-FDD B1/2/3/4/5/7/8/12&B17/20