Removable 2100mAh Li-ion Battery, Endurance 8-10 Hours Support word mode network, TDD-LTE/FDD-LTE/UMTS Low-power Energy, endurance 8-10 hours,Small and convenient, easy to take The removable battery compatible with S3,easy to replace and purchase Support SD card(Up to 32GB) and file sharing via WiFi Up to 10 users access to WiFi Technical: FDD-LTE 3GPP,3GPP2 Release9,Category3,up to 150M DL and 50M bps UL DC-HPSA+ 3GPP,3GPP2 Release8, up to 42Mbps ,category 24,5.76M bps UL HPSA+ 3GPP,3GPP2 Release7, up to 14.4Mbps ,category 10,5.76M bps UL HSPA 3GPP,3GPP2 Release6, up to 7.2M bps DL,category 7,8,5.76M bps UL UMTS 3GPP Release4, up to 384 Kbps DL and UL ,FDD800/1800/2100/2600MHZ(B1/3/7/20) (The product printed words may vary depending on the batch, but this does not affect use) Color:As Shown Material:ABS Package Contents: 1 * 4G Lte Router