1. Installation of 2 AAA batteries (not included), low power consumption, long time use, no need to replace batteries frequently 2. Environmentally friendly materials, safe to use 3. Cute design, simple operation 4. Channel:1CH 5. Working voltage: 2.0V-3.3V 6. Frequency: PMR:446.09375 MHz 7. Transmitting power: less than or equal to 0.05W 8. Modulation type: FM-F3E 9. TX frequency error: +/-1500Hz
