Description: 100% brand new and high quality Electronic frequency: 27MHZ/40MHZ Voltage: 4.5V-6V Positive and negative pole: 3V Material: Fiberglass board Size:As the picture show Quantity: 1 set Package includes: 1 x Transmitter Board Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!