The Hollyland Mars T1000 is a 1-to-4 full-duplex wireless intercom system designed for professional communication in broadcasting, training, and events. Operating in the 1.9GHz frequency band with GFSK modulation, it provides carrier-grade voice quality (300Hz-4kHz frequency response, >50dB SNR). With a 1,000ft (300m) transmission range, the system features RJ45 connectivity for 4-wire audio interface and external tally capabilities. The base station (22×17×5cm) supports dual NP-F970 batteries for over 20 hours runtime, while each beltpack (10×5.8×2.2cm) delivers 8+ hours operation. Includes base station, 4 beltpacks, 5 headset units, antennas, and charging accessories.