Samsung Blue Earth also known as Samsung S7550, or Samsung GT-S7550(european model) is a touchscreen phone made from recycled plastic culled from plastic water bottles, called PCM. It was announced on 13 February 2009. The unit has a solar panel on the back, covering 80% of the area, that allows for enough power to make phone calls. Samsung states that “…1 hour of sunlight at about 80,000 lux (approximately the amount of sunlight at noon on a sunny day) charging will provide 5-10 minutes of talk time.” A conventional rechargeable battery is also provided.