24sync

 is the 27th single released by access.

Type A CD

 * 1) 24sync
 * 2) Missing 4 seasons -24treasure mix-
 * 3) Winter Ring Affair (Instrumental)

Type X CD

 * 1) 24sync
 * 2) Bet ~Tsuioku no Roulette~ (Bet ~追憶のRoulette~) (access ELECTRIC NIGHT 2016 ver.)
 * 3) Winter Ring Affair (Instrumental)

Type S CD

 * 1) 24sync
 * 2) f☆R☆E☆e (access ELECTRIC NIGHT 2016 ver.)
 * 3) Winter Ring Affair (Instrumental)