Detectives were last night viewing security camera footage for clues after armed robbers escaped with a pendant, five rings and 99 luxury watches worth more than $3 million from a Causeway Bay department store. The robbers dodged police armed with shotguns and rifles to vanish into crowds in the busy shopping district. Police are looking for four men, three of whom entered the Dickson Watch and Jewellery Company on the ground-floor of Seibu. The three inside the shop were about 35. The fourth waited outside. The trio inside threatened the three male staff with what appeared to be pistols and ordered them to open display counters, an investigator said. 'They stuffed the valuables into a black leather bag and fled,' he said. Heavily armed police threw a cordon around the Windsor House store before witnesses revealed the robbers had gone. The investigator said the store had a closed-circuit TV surveillance system, which might hold vital clues. The robbers were last seen heading towards Sugar Street. The haul included 80 Rolexes.