I purchased this about two years ago on Mercari. I used it daily on my work iPhone SE3 for about a year after the purchase. The battery didn't drain quickly. Also, it is definitely a genuine Apple product. There are some notes about the product: ・Occasionally, the charging case is not recognized, but it can be fixed by reattaching the case. ・The silicone on the exterior was peeling off, so I cut it all off with a utility knife. The straight scratch on the back of the case is from the utility knife. ・Due to the silicone being removed, the durability of the case itself has decreased (the part in photo 5 is fragile). ・The lower speaker area tended to get clogged with debris, so I removed the windbreak-like parts around that area. In most situations, the iPhone can be recognized when the case is attached, but I would like to sell it as junk, with no claims and no returns. Shipping is planned via Yu-Packet Post. Please note that Yu-Packet Post takes a few days to ship.