I bought 1 year ago an AP 15400 whit SS Strap, but my skin is allergic on this material so i'm searching since 1 year about a Leather strap + Conversion kit plots and nuckle for this watch, but i only find for 44mm watches, so i hope anyone can help me about that and send me a PM or answear here if possible where i can buy them whitout spending over 100€ around... have a nice day all !