1. This product adopts high-integration chip design, ID code matching authentication 2. Frequency range: 560.000-590.000MHZ 3. Adjustable channels: 16 frequency adjustable points 4. Channel spacing: 0.5-2.5MHz 5. Modulation mode: digital modulation Frequency instability: +3PPM Frequency response: 40Hz-20KHZ Working range: 50-80M Working voltage: built-in 3.7V, 1500mAh lithium battery This product uses a converter and can be used for speakers, power amplifiers, mixers or guitars and other equipment. Color: Black Material: ABS+Aluminum Alloy Package Contents: 1 set x Wireless Monitoring System Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.