Fangrui Product Details Two-way Foldable Antenna, Can Adjust The Antenna To The Angle At Any Time According To The Direction Of The Receiver, The Transmission Signal Is Stronger And More Stable Audio Output, New Low-power High-fidelity Speaker, Minimal Distortion, High Sound Quality External Nano Interface, Support Elrs/crsf/tracernano Module Oled Screen Displays Fine And Clear, With Little Grain Compact And Portable, Ergonomic Design, Extremely Comfortable To Hold Built-in Rf: Elrs 1w Power (3odbm) Working Voltage: Dc6v-8.4v Remote Controller Firmware: Edgetx Screen: 1.3 Inch Oled I28*64 Simulator Interface: 3.5mm Standard Ppm Or Usb-c Battery: 2x18650 Battery (battery Not Included) Sd Card: Onboard Storage Chip Style:rdc50 Colour:as Shown Material:abs Package Contents: 1 * Remote Controller Kit 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