This is Miraito from Hiromi Sangyo Co., Ltd. These are the 327G type and the 316Y type. Both are essential for night fishing. They are mini-sized, so they can be used for various things like electric floats, rod tip lights, worms, and landing net lights. They are unused, but please refrain from purchasing if you are overly concerned about condition. Thank you very much. m(__)b They are also good substitutes for chemical light sticks, etc.