Spektrum STX2 FHSS 2 channel 2.4Ghz Surface Radio System comes complete with the SRX200 waterproof receiver. The Spektrum STX2 is the best value entry level 2.4Ghz surface radio money can buy. With features like the included waterproof SRX200 receiver throttle and steering servo reversing throttle and steering travel adjust and a throttle limit function (a great feature for beginners or young children) you won't be lacking for anything. This is the ideal radio as a replacement for those cheap under-performing radios that come with some RTR models or if you are building a kit and need a quality radio. Note that the STX2 and SRX200 utilise FHSS and are not compatible with Spektrum DSM DSM2 DSMX or DSMR transmitters or receivers.