I just took out the back of the watch to replace the battery and I've never felt so powerful

Now, I'm fully trained and YT certified. I've got a similar tool kit with lots of extra spare parts off Amazon a few years ago. Makes battery replacement much easier and enjoyable.

Thanks, Mark. Very useful and informative. A quick question: anything particular one should use (or avoid!) in cleaning the case back?

Great voice, and presentation! My not being a professional watch repairer, have enjoyed, first, the theory associated with various watches, the application, and then how to remove the back of certain watches. I have a specialty working on delicate implements requiring special tools. Utilizing an improper device, that is one designed to carry out its function, will more than likely ruin the intended use. Even if a screw is scratched or dented can cause that device to go down in value. Creating damage that was not there previously is never good at all. My hat is off to you "Mr. Long Island." I am interested in knowing of the other watch repairers kit you had mentioned but did not show it in the video. Many thanks. Semper Fi

This is a great series. Thanks for putting these watch and learn videos together. Very informative.

Was having difficulty removing the back of my old Timex using a tiny blade screwdriver. When I saw Mark using his special knife approach the case sideways I pulled out my old small Buck knife and held it that way and it popped right out. I couldn't find an indent on my case cover so this worked quite well. I had to push really hard to get the cover back on right, but it doesn't look as tight as it was. Anyway, thanks Mark for your clear instructions!

great video mark, ive just received my watch repair kit. you learn so much from these videos and get to know what each item does in the watch repair kit... thanks mark for another great video..

Thanks for this video. I had been trying for days to get my snap watch back off! After watching your video, I knew what to look for. It came off soooooo easy with very little effort!

I learn something from every single one of the watch and learn videos. Thanks for making them. As a side note, I love that orient watch. I know that it isn't anything "special", but it really appeals to me.

Thank you! Such great timing because I need to change my watch's battery.

Thank you very much for your help!!! I was having some problem removing the back of a watch because the blade kept messing up the until I found your instruction. What did the trick was the way you mention on how to sharpen it. Thin enough to fit but thick enough so that it won't bend or chip.

Excellent! Excellent! Excellent! This is a fantastic series and I continue to be thankful for this great service you provide for free to the watch community. Oh yeah, I bought an SKX007 from you last month because I wanted to show my appreciation as a customer as well. :)

Thank you for some great information! I liked the idea of the 'watch ball' to remove the back of my Seiko watch, but , not having one I had to improvise. I found a wad of 'poster putty' on the bottom of an empty prescription pill bottle worked just as well. Again, thanks for a great series of videos.

Mark thanks for providing so much information to the community another excellent video !!!

I had six watches with dead batteries but the sixth one is just too difficult. This blog helped me a lot. Wish me luck with this sixth and last. It’s hard.

TY Marc for sharing your knowledge with us in a low key way !!!

Worked! Thank you, my 87 yr old Dad was heart broken this worked changing battery and the pill top to close worked perfect, thx again Dad is a happy pops again ⌚👍

Thank you for this. I was going to try to open mine, but you convinced me to go to a professional!

I forgot about that little notch. It made it so simple the 1st try; Thanks for your video.

Hi Mark, nice instructional vid. May I know what jaxa wrench that you used in the vid, and where I can get one? Thanks

Another great informative video! Thanks a lot, Mark!

Great vid, thanks for the info. I did learn a little trick to snap the back on if it's stubborn and you don't have a press. Right now im trying to get one off that someone else pretty much wore off that little notch and scratched the heck out of it in the process.

Fascinating. Really! Also enjoyed your chat with Tristan (TGV).

This video is full of information useful to me. Thank you. What is the maximum size watch the Jaxa tool you show can handle?

“So, you’re doing what you have to do, you’re regulating it, you’re ruining your watch forever; whatever you feel like doing “, lol!Keep the videos coming Mark...love them.

It shows you care about watches and how to do things right. Your video let me change the battery in a Fossil watch. What worked for me, was after seeing the ball you have is a cut off section of a silicone tube ( gun style) that had dried out a long time ago. The silicone tube section really grips the watch back and let me turn it without tools.

Hey Mark, I love the series, and I'm really just learning and getting into appreciating watches. I do have a question, related to moisture. Do you know what temperature an all metal watch (on a metal bracelet) can tolerate? Assuming a modern automatic - the watch I have is fine, but it has a Seiko NH35 movement. That is, if someone had the idea of putting the watch in the oven at 220 degrees Fahrenheit to remove moisture, would it damage the watch? I mean, it sounds like a really bad idea... possibly because the lubricants for the gears might contain volatile organic compounds. Thus, if you don't know the temperature range at which you start to risk damaging the watch, do you know what the chemical composition of the gear lubricants is, and if there are any plastic parts in these cheaper automatic movements?

Would you attempt the ball technique on a Sarb033?

Can you advise me on a tool to open 50mm or more screw watch backs. I have invictas.

Hi Mark...I have a Timex T2P427DH3 GMT watch. What tool is needed to take of the back, and what size battery do I need? Thank you, Richard

almost gave up till I watched your video, push down hard, and slightly turn, very good picture in slow motion. I got my wife's very small bulova back off! 379 battery. much appreciated

I have three Michael kors watches with notches in the screw casing that are very shallow. I originally bought a tool to open them but not the spanner kind this one just has two movable parts to lock into the notches to open the back up. It has failed and infact it broke with the pressure I was applying to try and open the back of one. I have applied ice cubes to the cases to try and get them to budge as this worked on a previous watch but these just wont open. Have you any tricks of the trade that you use with backs like these? TIA

This case bace opener which one is good ? 2 contact or 3 contact ?

Do you have any recomendations for one of the old style quartz pop backs? The ledge is soooo fine, that its really hard to find anything that will get under and pop off.

Hey, I asked for this info. a few weeks ago, thanks for uploading!

does that "clam knife" tool work for very thin women's watches. I'm having a difficult time removing my watch back. I bought a repair kit but the knife seems to be to large to fit into the notch. Any ideas?

Thank you. It helped to change batteries for few of our watches.

Is funny when you have the right tools.

Another great video. I like the Seiko diver's watch. Good video shows how to take the backs off of most watches. There are a few watch backs that are kinda rare. Some Benrus Swiss Army have some odd backs and of course Rolex. I like this video it covers nearly every watch back style a regular guy will ever come across. Another good video.

OMG Thank you! I have a lot of watches, most not worth much but are fun. Having to pay someone to replace a battery is a continuing cost, so being able to do it myself is wonderful. Your video is v clear and I love that you are an enthusiastic amateur with a real love of nice watches.

I would like you to make similar piece on watches that require opening through crystal (like old Seiko Lord Matic 5606-7070).

Will the back case fit back, if the o ring gasket is not placed right or is removed?

thanks for the video, now i know how to change the battery :)

Great vid as usual Marc.

Hey Mark,wonderful videos,I enjoy watching them,one question though,how does one open a snap back case which does not have a notch or a dent in them?

Oh and that yacht master is absolutely stunning!

I have changed my variety of watch batteries for several versions of watch without trouble. But I have a mystery watch. Bought maybe 20 years ago, it is a ring watch. It has a huge synthetic sapphire and a cover that opens like a book to read the watch time. It has a stretchy metal band to adjust to fit. The metal battery cover plate is a "pop off". I can pop it on one side but only lift about 4 mm. The trouble is both sides where the metal band attach will not allow me to remove the plate to get at the battery. It lifts using a flat screwdriver. I am searching for videos for ring watch plate removal. I have even used a magnifier to see if there is something you push that lets go of the band.

I´m trying to find the way to open Orient Bambino SS. There is a notch, but it is too small to fit anything in. Any suggestion?

If you want to be in the know & how to use the tools to do the job this video is the go , learn how to inspect your time machines ,and not destroy the gasket etc another excellent example of how to do it right at home. Fantastic Mark 👏👍⌚⌚⌚⌚⌚ five watch star's.

Very useful information for replacing battery in the watch!

What about using a silicone sealer on the gasket; will it make it re-water resistant?

Love your thoroughness. Thanks.

Great video! The educational series videos are fantastic.

"So you do what you gotta do, you're regulating it, you're ruining your watch forever, whatever you feel like doing..." luvs it lol

Thank you! After two videos that failed to help me, this one was near-perfect! However, what if the pop back doesn't open with the red dull knife? What tool do I use for that?

How about sizing a gasket for the back of the watch? Does it fit on the lid or on the watch itself?

Thank you, it is very useful, well explained. You made it very simple.

Hi Marc, I really like this channel! Also like the new Red Star pieces. Maybe you can do a video on this brand? What's the relation between Red Star and Seagull 1963? (If any). Many greetings from the Low Country

I had a broken Cheap Chinese Automatic Watch, I man handled it open. However this is very informative and wish I had watched this first. Nice video.

Thank you for this video, it teaches me a lot,To God be the Glory. Stay safe bro.

Do you sell the three prong wrench by itself and not in a tool case?

That ball is great. Got the rest and practiced on a cheap watch. The screwback with undeep slots was really tricky. Easy to damage when you slip

Thank you!!!!! Great tutorial! 👏🏼👌🏼👌🏼

Thanks, that was helpful!

Hey Mark, is that an LG Master spanner tool you used ? I didn’t see the same tool on your site. Did I miss it ?

Help, I removed the screw down back cover on my Bulova automatic watch. I looked inside to verify the mainspring wasn't broken, and the flywheel was free spinning. I screwed the cover back on. Problem, now I notice that the inside of the watch is loose, and I can see it moving when I adjust the time. What did I do or move inside? I didn't see anything fall out. How can I fix this?

Boy that Yacht Master is beautiful !!! Great video Marc !!

On my TImex Snap-Back I've learned (the hard way) to find something that fits perfectly around the outside of the ring for the snap-back. I tried to put it on with my fingers once, BENT the back, and broke the beeper that sits on the inside of the back of the case. With my Timex (Expedition dual display real nerdy I know but I love it) you have to put the back on a certain way or the beeper won't work: there's a tiny triangle pointing towards the upper right (2 o' clock position if it had been the front of the watch), which is also where the part of case is you need to pry on to get the case back off. If this watch back isn't put on straight the watch will not beep. Just FYI.

So, without a spanner wrench handy, is it a bad idea to use a mini flathead to open since it's only one point of contact (not counting resistance from other hand when holding the watch in place)?

Thanks so much - very helpful!

Thank you for the video. Well done.

This really helped. Thank you

Thanks for all the info

for screwed down case back, will removing and putting the case back on somehow lessen the WR rating? I'm just afraid that I might not be doing something right when I reinstall the case back.

Old video but still good 🙌🏻 cheers for the help

Great Educational Series, keep up the great work!

I have a Mac Jacob. I undo the strap to install new battery but can not snap it back on no matter how hard I tried. It has the matching slot to open and to put back on but it won’t snap. Do you have any recommendations??😊

I love that Orient. What is it called, and where can I buy one?

What's that second watch with the screws on the back? The one that's made in Germany.

Great video dude. Loving the content and learning a lot. Respect from the U.K.! 🇬🇧

Curious about something i saw once, it was a sponge with 'something' on it to apply on the gasket.

I'm glad I found this but the watches I'm trying to do this on (two of my wife's) snap into place and I'm not seeing a groove on one, not sure if I'm seeing a groove on the other. Getting under the groove? You were using a scalpel. Any other suggestions? Sharp kitchen knife not working.

Super video. Thanks!!!

I have a Zodiac Sea Chron . And I need a die to remove the case back . Any thoughts on how to remove the back without going for a die I'll possibly only use once ? And if not where can I find the die ?

It really helps ,,thanks brother ❤️

It would be an impossible feat to achieve for any human being to have any kind of conflict with Mark, he is more kind than Ned Flanders.

This is an interesting case opening wrench. I have a Meikosha, Bergeon Jaxa, and couple of Chinese Jaxa knock-offs, but I haven't seen the one featured in this video before.

When the cover does not go by a thumb pushing it required another sound-science solution: place the cover in the freeze for a few minutes in order to contract the circumference and then it will go by an easy push.

Thanks guy u just saved me a lot of time and money!!!

Your video are on watches are so in lightning have learned so much thank you .....

Cannot find link to that rubber like blue ball tool you used to remove back cover?

Where do I buy a knife like that to pop off backs? Thanks..

should it be raised to above room temperature before opening ?

"diametrically opposite of each other" spoken like a true engineer, love it!

All this is very well and good. The question is, can you hard reset an apple watch 6 series without any passwords or apple ID?? Anyone can change batteries. Are those watches for sale, and do they come in mens? Thanks for the video!!

i have a breitling navitimer 1884 need battery replacement and clean up. i have been looking around for a dealer but i live in long island and it seens like the only dealer is in the city.. if you know some where in long island please let me know.

I can't find your video that you mention on using a 'press' to put back a 'pressure pop' back. Please can you point me in the right direction? thanks

what kind of battery does the watch take? nixon ss corporal

Great information thanks 🙏🏻

What is the namebrand on that 3point wrench? That is some high quality stuff!