The Aqua Cam is an ESP-designed bottle of water intended to be used together with the Sting recorder. The bottle is furnished with a hidden compartment concealed entirely by a label. Above and below the compartment, the bottle can be filled with drinkable water. A CCD camera, situated behind the label, is undetected and all that is visible to the eye is the water. To activate the recorder, apply pressure to a particular section of the bottle. The vibration will activate the Sting inside the compartment and will record for up to 2 hours. The Aqua Cam is ideal for situations where body searches are expected or locations such as swimming pools or the beach, where clothing and accessories are minimal.