Bayside Sexual Offences and Child Abuse Investigation Team detectives are investigating after a man commit a lewd act in Brighton on Saturday 1 November.
The man climbed a residential fence and inappropriately touched himself while looking through the window of a home in the vicinity of New and Kinnane streets at 2.18pm.
The quick-thinking female victim managed to take a video of the man who fled the scene on foot.
Detectives have released an image and CCTV of a man they believe may be able to assist with their enquiries.
The man is described to be aged between 35-40, wearing a distinctive pink bucket hat, sunglasses, a white Nike T-Shirt with the logo 'Just Do It'.
Any witnesses, anyone with information or dashcam/CCTV footage is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au