Improved circuit design Newly upgraded Temperature Compensated Crystal Oscillator (lower packet loss, high frequency stability) High-performance at 2400MHz Performance and Compability Make sure to install the antenna from conductive or magnetic components (carbon, metal, motors). Antenna connector: IPEX Firmware:ExpressLRS 2.4GMHz Nano RX(2.4G) Frequency bands: 2.4GHz ISM Telemetry Power: 12.3dbm(17mW 2.4G) Dimension: 10x13mm Connector: SUR0.8 Connector Interface: RX TX 5V GND Input voltage: 5V Protocol: CRSF Weight: 0.5g NOTE: Due to local regulations, The 2400MHz band works great in any region, has a higher packet rate up to 500hz. This is not a common 2400MHz protocol and cannot be compared to anything prior on the market. Checkout the official ExpressLRS website: https://.expresslrs. Official ExpressLRS Quick Start: https://.expresslrs./2.0/quick-start/-started/ Colour:black+green(2.4GHz) Material:plastic+metal Package Contents: 1 x ELRS Nano Receiver 1 x Antenna 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.