Crazepony&reg; TS5828 5.8Ghz 32Ch 600mW FPV AV Wireless Transmitter for mini multicopter 250QAV 32 channels: Cover A, B, E bands and F bands Power off memory for last channel and band Two switching buttons for the band and channel Two digits display for the band and channel Micro sized and light weight - perfectly use for small quadcopter and multicopters.