J1 adopts the new national standard 7-hole special AC gun shape; The shell material is made of highly flame-retardant PC fuel, which is highly effective in flame retardancy, rejects hidden dangers, is safe and non flammable, and is wear-resistant, impact resistant, and highly oil resistant, extending the product's service life and protecting the user's safety in use. The product has a waterproof body and is not afraid of rain. The waterproof grade is "IP54", which can easily face rain and prevent the invasion of various splashing water without harmful effects. It can achieve fast charging, over temperature protection, and has a beautiful appearance. The handheld design conforms to ergonomic principles, which can improve user comfort and experience.