This is a USB charging cable specifically designed for Shimano Di2 12-speed series. It allows charging from smartphones and USB chargers with a Type-C port, making it convenient for carrying during touring or for emergency use. 【Compatible Models】 105 Di2 (R7170) / Ultegra Di2 (R8150/8170) / Dura-Ace Di2 (R9250/9270), and all other 12-speed compatible models. 【Features】 ・Type-C connection, also supports reverse charging from smartphones ・Blue light on during charging → Turns off when fully charged ・Lightweight and compact, convenient to carry ・The insertion part is securely locked for stable connection 【Important Notes】 This product is not a genuine manufacturer product. It is designed as a charging-only cable and does not support firmware updates or data communication. We have confirmed that it works without problems during normal use. Please consider this before purchasing. 【Shipping】 We usually ship on the same day or the next day. Due to circumstances such as business trips, it may take 2-3 days.