MASPRO UHF booster compatible with 4K/8K, with signal strength adjustment. - Model Name: UTRW30BC - Brand: MASPRO - Function: UHF Booster - Supported Resolution: 4K/8K - Connection Terminals: 2 UHF output terminals - Power Adapter: Included - Adjustment Function: Signal strength adjustment knob Thank you for viewing. There is a thin instruction manual, but no outer box. Everything in the pictures is included. ☆ I have a long-haired cat. Please refrain from purchasing if you have allergies. Thank you for your consideration. #Maspro #Nippon Antenna #TerrestrialDigital #Booster