Usage of Car Jump :1. the red battery of jumper cable to the vehicles positive (+) battery and the black to the negative pole.2. Plug the cord of jumper cable into the jumper socket.3. the vehicle.Starting Current:300AOutput current :350AInput Voltage:12VStrong Clip with EC5 Plug Connector(Fit for car jump portable )Cautions:Red to the positive(+) battery terminal, black to the negative(-) battery terminal.Do remove the in 30s after the vehicle started.Do not and/or attach two , it may danger Keep this appliance from children.Colour:Photo ColorMaterial:Plastic + MetalSize:Overall length: 320MMPackage Contents:1 x Jump CableOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.