Features: Greatly enhance the mobile broadband network coverage and Wi-Fi receiving capabilities of your 4G/3G mobile router, if you are in a weak signal area. It is the highest gain 28dbi 3G/4G LTE antenna. Comes with two SMA connectors, the cable length is 3 Meters. This antenna will work with mobile broadband devices that have SMA external antenna port. Frequency range: 690-2700MHz. Note: The item just can increase network coverage in a certain direction, cannot increase the network transmission speed. Specifications: Frequency: 690-2700MHz VSWR: <=1.5 Gain: 28dBi Polarization: vertical Max input power: 50W Input Impedance: 50 Ohms Extension cable: RG174 3m Connector: SMA(Male) Dimensions: 75 x 52 x 8mm/3.0" x 2.0" x 0.3" Fit for Mobile Signal Routers: -- HUAWEI B880 E5175 E5186 B890, B593, B593U-12, B593S-22, B593U-91, B593U-12, B593U,E5172AS-22, E5172S-22, E5172. -- ZTE MF253 MF283 MF25D, MF28G, MF29T, MF29S2, MF28D. -- Vodafone B4000, B3000, B2000, B1000. Package includes: 1 x 4G LTE antenna signal booster panel