The 3rd generation TYPE S Wireless Solar-Powered HD Backup Camera is the most powerful yet. With the addition of a second lithium-ion battery, the power capacity is now doubled to 5000mAh. Repositioned solar panels capture more sunlight, thus maximizing solar-charging efficiency. A wave of the hand activates the high definition, touchscreen monitor. This system is extendable. Increase your safety by adding a second camera for a split-screen front and rearview. Add-On Wireless Parking Camera sold separately.