Simple to use, no need for booster cables; Charges from a vehicles 12v power socket, no need to open the bonnet. Adjustable 12v power plug. Charges a flat battery in minutes Easy to read digital display & adjustable angle 12v power plug Connects both vehicles through 12v power sockets 6 metre cable for easy connection between vehicles Short circuit protection avoids damage to vehicle electrical systems. Battery level of the donor vehicle must be fully charged. Plug in to 12v power socket of donor vehicle. Plug in to 12v power socket of vehicle with flat battery. When display reaches 20%, start vehicle with flat battery. Includes: adjustable 12v power plug. Size H17, W7, D4cm. Weight 0.31kg. Rechargeable (included) (not included). (excludes professional use).