Tested without film. I put 2 AA batteries in (not included) and the ready light went on and the flash went off when I pushed the button, I wound it and tried it a second time with no problem. There's a 100/400 switch and the flash slides. I don't have the instructions. Please don't hesitate to contact me with any questions or for more photos. I NEVER use stock photos, what you see is EXACTLY what you get, so buy with confidence! Any Media Mail items such as books or records can take a few weeks, regardless of any time estimate claims (DVDs and CDs ship first class, unless a set or book that adds to the weight). Also, I make my labels at home, so many times the tracking number will not immediately show any movement until it is in the destination post office or even when it is delivered. I assure you that when a tracking label has been made, if it is before 4:30 PM EST (1:00 on Sat.), it is already at the post office that day. If later in the day, it will be dropped off the next morning. Most of my items come from yard sales, thrift stores, estate sales, etc. I try my best to test or examine everything, but I can't get to it all. I will not leave feedback until feedback is left for me, and if there are any problems please contact me so we can work it out. I am very proud of my 100% feedback and want to keep it that way. I accept returns on most items, and accept Paypal only. Thank you for your interest and please check out my store!