I can change the time, but it either doesn't work or doesn't work properly. The screw on the back, not the crown, is easily removed as it's just attached. I don't know the details well, and it's a non-working item in very poor condition, so it's being sold as a completely junk item. I would appreciate it if someone who understands that it is a completely junk item and is satisfied after thoroughly reviewing the product page and images would like to purchase it. It will be placed in a bag, wrapped in bubble wrap, cushioned with newspaper, and shipped via Yu-Packet Plus in a dedicated box using Yu-Yu Mercari delivery. I apologize for the inconvenience, but please consider purchasing after reading my profile. I am not negotiating prices. I look forward to your purchase. Thank you for reading to the end. #CompletelyJunkItem #ENGLAND #Antique #Watch