JAGROM 12 Inch Cordless String Trimmer and Edger equipped with upgrade motor, providing effective cleaning work for your garden and yard. Feature: Trimmer and edger 2-in-1 Totally 60 minutes working time and fast charger Automatic line feed and cut Ergonomically adjustable for use and foldable for storage Package Content: 1 x cordless string trimmer 8 x coil 2 x 3.0Ah battery 1 x charger 2 x spool cap User manual Tips for use: 1. Please kindly read the user manual before use. 2. If the string line does not advance, please try the steps: Step 1: Please make sure there is enough line and it is not tangle. Otherwise, please replace the coil or rewind it. Step 2: If there is still has line outside the spool housing, please restart the machine 2 to 3 times and the line will come out automatically. Step 3: If there is no line out of the spool housing, please pull out some lines and then restart the machine 2 to 3 times and the line will come out automatically. ( We have prepare a video for solving the problem, please chat with us.) 3. If you meet and product issues, please let us know in time. We will do our best to solve your problem.