Used about once a week for six months. There are no noticeable scratches or stains, and it is in clean condition. Product Features SADDLE Ai ALERT 250 REAR Rear light with saddle rail mounting type equipped with brake sensing technology. It detects deceleration and changes the output mode, attracting the attention of following vehicles and surroundings with a 270° wide beam. A total of 7 lighting and flashing modes, including a daytime flash mode that is intensely eye-catching even during the day. Weight: 29g Size: 41.8 x 43.8 x 31mm Maximum brightness: 15Lm Maximum runtime: 12 hours (FEMTO mode/5Lm) Battery capacity: 210mAh Waterproof standard: IPX7