The money I could have saved me. The button to lock the bracket jumps by itself again and again and the camera threatened by repeatedly falling off. In addition, the camera shake is too strong through this spongy suction cup. When I wanted to pull the camera from the tank, broke the locking mechanism into its component parts, therefore this thing is now also broken. Have it disposed of in the trash where it belongs. Stay away from them this Sony garbage. Mfg