Perrelet Watch Weekend 3 Hands Open Heart A1302/4. Blue and black watches from the Perrelet Weekend collection are colours that are intimately associated with elegance. Whether it is an important meeting, a gala event, or simply for men who favour a classic look, blue and black are the perfect colours for a smart suit or a more relaxed sporty blazer. The care gone into selecting your outfit should be matched by the accessories complementing your look, especially when it comes to choosing a wristwatch.