Stopwatch Agate! Works without interruption. Has an accurate measurement. The stopwatch does not have a ring for attaching the chain. The stopwatch has signs of use. Please see the photo carefully. PS: Dear customers!!! I really appreciate that you visit my store. If possible, I will expand the range of my products. Don't forget to subscribe to me. I try to describe all my lots in as much detail as possible in the condition of the item itself. Please be very careful! If something goes wrong, please do not rush to conclusions, everything can be settled))). I combine items so you can save on shipping. All parcels are shipped by air. Estimated delivery of the lot is from 13 to 23 working days. There are certainly delays and this can be sorted out! I wish you happy shopping!