Unsurprisingly the replica Panerai Luminor Power Reserve watches is a version of the standard 44mm Luminor Marina with a power reserve indicator and a date under a cyclops at 3. The power reserve, like most of the rest of the line, is or has been available with the polished steel case, in a PVD finish, or in titanium.
In the replica Panerai Luminor Power Reserve watches first "A series" of this iteration the power reserve hand was pointed, and sat on a more distinct "track", but from the replica Luminor Power Reserve B series onwards the hand changed to a standard "leaf" shape. The cut-off point between these two designs was not exact i.e. you will find one or two B series models with the old arrow hand. The replica Luminor Power Reserve A - C models all feature a power reserve indicator at 6, and large centre seconds, powered by an automatic Soprod calibre 9040 (basically a modified ETA movement). The model then underwent a fairly radical design change for the D series. The seconds hand is now a small-seconds at 9, like all other Panerai Luminor models, and the power reserve indication at now at 4. The movement changed to be a modified Valjoux OP IX. Despite the fact that the PAM 57 theoretically only lasted for a year (replacing the PVD model, but then being phased out in favor of the changed movement and dial arrangement) there are a few D series PAM 57s.