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