5.8GHz video / audio sync transmission. Compact structure、 small size. High output power、 low power consumption、 and low harmonic radiation of the transmitter. Ideal for FPV、 wireless remote control aircraft、 wireless remote control vehicle and so on. Dimensions: 2.76 in x 0.91 in x 0.31 in (7.0 cm x 2.3 cm x 0.8 cm) Weight: 0.35 oz (10 g)