Audio-Technica System 10 ATW-1701/L Portable Camera Mount Wireless Lavalier System Digital 24-bit/48 kHz wireless operation for ultimate sound quality and dependable performance Operates in the 2.4 GHz range - completely free from TV interference Extremely easy operation with instantaneous channel selection, sync and setup and three levels of diversity assurance: frequency, time & space for seamless interference free operation Ultra compact receiver size with multiple mounting options; selectable balanced and unbalanced output jacks with level control for use with most cameras and recording devices Internal rechargeable 12-hr battery, separate headphone port and volume control for local audio monitoring