No woman could fail to be wowed by the Joaillerie 101 Manchette, a Jaeger-LeCoultre watch housing the world's smallest mechanical movement in an incredibly feminine piece of jewellery in 18 carat white gold, beset with 576 diamonds which at night reveal the secret message "I love you".

This exquisite watch has a mechanically wound movement. It is available in three versions. The three row version (pictured bottom right) contains 576 diamonds (four carats) which at night glow "I love you". The five row version contains 1440 diamonds (10 carats) or there is the "Clous de Paris" version with 1360 diamonds (nine carats).