Airtel 4g lte smartbox router with browsing and download speed of 150mbps is one of the best performing table top indoor cpe routers available for home and office use. it comes with inbuilt removable battery with 2,200mah, 8.14wh, and 3.7v battery capacity. capable of delivering up to 4-6 hours of connectivity while you share the connection with at least 32 devices at once and it covers a wi-fi range of 100 meters. works with airtel network only until you decide to jailbreak it. purchase quality products from sommytex technology enterprise limited.