Transponders are tools used to send satellite signals to the Martians. They are used to write into the Message to Martians. A pair of Space Capsule & Transponder is needed to mint a Character! https://opensea.io/collection/mtm-characters https://opensea.io/collection/space-capsules Character Guide: https://tinyurl.com/MTMCharacterGuide2 Character MINTING Guide: https://tinyurl.com/MTMCharacterMintingGudie