The Chiayo SM6100 IrDA Bodypack Transmitter – 100-Channel UHF (566?MHz) offers fast and accurate 2-way frequency synchronization with your receiver, ensuring reliable, hassle-free wireless performance. Features Mini, robust and lightweight plastic housing design. World-first IrDA function provides rapid and precise 2-way frequency sync between the receiver and transmitter. Clear and intuitive LCD display for easy operation and quick set-up. On-the-top features include power switch, mini-XLR connector and antenna. Mini XLR input for lavalier, headset, earset microphones and guitar. Adjustable belt clip allows wearing in up or down position. Specifications Model: SM-6100 IrDA Frequency Range: UHF 500 – 960 MHz Bandwidth: 25 MHz Preset Channels: 100 RF power output: ? 35mW Housing: ABS Dimensions: 84 × 64 × 23 mm Weight: 76 g Battery: 2 × AA Operating time: 16 hours