4G full network access, universal use. GPS + Beidou + LBS triple-mode positioning. Fireproof and drop-resistant, IP67 waterproof, and military-grade craftsmanship. Wide voltage design supports DC 9V - 95V. LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B28/B66 GSM: B2/B3/B5/B8