Alto Stealth 1, 1-Channel Radio Transmission System for XLR Connections (Mic/Line), Fast set-up and take-down, Replaces up to 30 m of cable, 16 UHF channels selectable, LCD display, Frequency range: 863 - 865 MHz, Operates with 1 x AA battery or via USB micro connector, Battery life: > 4 hours, Receiver dimensions: 22 x 103 x 23 mm, Transmitter dimensions: 22 x 114 x 23 mm, Weight: 0.063 kg, Accessories: 2 x USB-A to USB-Micro cable