Fangrui Product Details Adopts Ipex1 First-generation Antenna Base And External T-shaped Antenna These Receivers Are Ultra-light And Ultra-small In Size, Making Them Easy To Carry Great For Fpv Matches And Long Distances Excellent Material, Not Easy To Damage The Nano Receiver (2.4g Version) Is A Receiver With A Power Amplifier (pa+lna). It Has 100mw Telemetry Output And Better Sensitivity At Longer Distances Name: Elrs 2.4g Receiver Firmware: 2400 Nano Antenna Interface: 1 Working Voltage: 4-5.5v Maximum Refresh Rate: 500hz Minimum Refresh Rate: 25hz Colour:black Material:pcb Package Contents: 1x Receiver 2x Heat Shrink Tubing 1x Connection Cable 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.