Feature 17x11mm Small size 0.7g weight WIFI Upgrade firmware ELRS open source project, remote control Maximum refresh rate of 200Hz The use of temperature-compensated crystal oscillator (TCXO), no fear of high or low temperature impact, more stable performance, even if long hours of work is not easy to cause loss of control up to 50mW telemetry power Specifications Size: 17x11mm Weight: 0.7g (RX only) Chips: ESP8285, SX1276 Crystal Oscillator: TCXO Frequency Band: 915MHz FCC /868MHz EU Refresh Rate: 25Hz-200Hz Input Voltage: 5V Antenna Connector: ipex1 TLM Power: 50mW Firmware：GEPRC Nano 900MHz RX Includes 1 x ELRS Nano 915M V2 Receiver 1 x Antenna 1 x Heat shrink tube 4 x Silicone cable 1 x Pin (4pin) 1 x Instruction manual