1,Battery:rechargeable battery 2,Material:abs 3,Long life,super-brightness led bulbs 4,color: customize Usage Instruction:1. ... had better to be usually used, please dont long-term shelve it, Please charge it over 8 hours ... . Please dont use when charging, it would burn LED bulb, or damage inner componenrs.3. Please dont ... charging.(Suggestion:charging in daylight time) 4pcs LED rechargeable Flashlight