・For riders struggling to see their dial locks, we have a key with an LED light! ・This dial lock features an innovative function that illuminates the numbers with the touch of a button. ・With the light used less than 10 times a day, the battery lasts for approximately one year without needing replacement. ・Of course, it's a "5-digit" lock + "ultra-durable specification" to maximize security. ・With a 5-digit lock, there are a staggering 100,000 possible combinations using the numbers 0-9! ・It's difficult to cut, and to prevent scratches on your precious vehicle, the cable is covered with a thick PVC material, making it super sturdy. I purchased this last year, used it a few times, and have stored it in a warehouse since then. The LED light has been used very little, so I think the battery is still good. There are some minor scratches, but it's still usable. The photos show everything. Please feel free to ask any questions in the comments, and I will answer them. 【Product Description】 ■Brand: ROCKBROS, a cycling item brand (We want to make cyclists all over the world happy!) ■Length: Approximately 180cm ■Weight: Approximately 437g ■Thickness: Approximately 1.2cm ■Battery: CR2032 【Recommended for those who】 Are tired of using their phone to illuminate their key / Ride at night often / Have trouble seeing the numbers on their dial / Are looking for a dial lock that is not easily cut or destroyed / Are worried about using only a wire lock / Are looking for a key that is extremely sturdy / Are looking for a dial lock instead of a key lock / Use it for commuting or going to school on a bicycle or motorcycle / Want to take thorough measures against theft ※Shipping costs are involved, so we apologize, but please consider this without a discount. Thank you for viewing.