The Audio2000 S AWM6601U is a mobile dual-channel battery-powered wireless system with one dual-channel wireless receiver two wireless transmitters one shoe-mount adapter two headset microphones two lavalier microphones two guitar cables one 3.5mm stereo-3.5mm stereo audio cable one owner s manual and six AA batteries. The included wireless transmitters operate in two different UHF bands to be used by two users simultaneously in the applications of news reporter DSLR camera PA speaker YouTube podcast video recording conference Vlogging interview stage & sound guitar player tour and teach. Each wireless transmitter powered by two AA batteries includes one guitar/line input one lavalier microphone input one guitar input On/Off switch one microphone input On/Off switch one USB 5V recharge input port one LCD display window frequency control buttons infrared frequency-synchronization buttons one Power LED indicator one Mute LED indicator one power On/Off switch and one belt clip. The dual-channel wireless receiver also powered by two AA batteries includes one locking 3.5mm stereo output jack line/phone audio output selection switch mono/stereo audio output selection switch two independent volume control knobs (one for each channel) one USB 5V recharge input port one LCD display two AF LED indicators Two RF LED indicators frequency control buttons one power On/Off switch and one belt clip. The complete package includes one dual-channel receiver two transmitters one shoe-mount adapter two headset microphones two lavalier microphones two guitar cables one 3.5mm stereo-3.5mm stereo audio cable one owner s manual and six AA batteries.