This is a special and limited edition created by Azimuth (a local Singapore brand) to commemorate Singapore's 45 years of Independence in year 2010. NDP stands for National Day Parade which is an annual patriotic celebration held in Singapore to commemorate independence. Only with the government approval that this ndp logo is allowed to be used. 10 pieces were created, not sold and was awarded out to important people that has served the country, most notable - the late Prime Minister LKY. 1 of the piece was donated to the Singapore National Museum. So this piece is money cant buy unless u get the other 9 to give it up and i was lucky to get it. Now selling because I am trimming my watch collection and looking for a new home for this historic piece. Condition is almost like new coz hardly worn and well taken care.