40%OFF CODE:DZXX2BMA 5 Grade difficulty:The package includes one portable laser trainer Target and 4 Size PVC Shelter. It provides 5 difficult grade options. (Bull's-eye: 60mm/45mm/35mm/25mm/15mm).You can choose the proper grade based on your needs just choose the proper film cover Rechargeable:Our Laser Target built-in rechargeable battery. The Universal Type-C charging port and equipped with low power alarm and charging indicators.