  We present an exceptional twin-Higgs model with the minimal symmetry
structure for an exact implementation of twin parity along with custodial
symmetry. Twin particles are mirrors of the Standard Model yet they carry
hypercharge, while the photon is identified with its twin. We thoroughly
explore the phenomenological signatures of hypercharged naturalness: long-lived
charged particles, a colorless twin top with electric charge $2/3$ that once
pair-produced, bounds via twin-color interactions and can annihilate to
dileptons or a Higgs plus a photon or a $Z$, and glueballs produced from Higgs
decays and twin-quarkonium annihilation that either decay displaced, or are
stable on collider scales and eventually decay to diphotons. Prospects for
detection of these signatures are also discussed.
