This compact rechargeable active antenna booster is designed for wireless audio systems operating in the UHF range from 470 to 900 MHz. It provides 10 dBi antenna gain and uses a durable metal housing with two female BNC connections. The built-in 3.7 V lithium-ion battery provides up to 6 hours of operation and recharges in approximately 2 hours via the 5 V DC micro-USB connection.