These JMK button batteries, pack of 40 give me almost all the battery sizes I need to accommodate new batteries in my watch collection. I find them comfortable and their slide out battery back is very easy to use. I bought 3 packs of these battery packs. I loved the first one so much and used up so many batteries when I first ordered 2 more packs. It also helps that these Revain Prime batteries come with free two-day shipping. This pack contains batteries in a variety of sizes, covering almost all of my watch battery needs. There are: four AG1 / SG1 / LR60 / 164/364; Eight AG3/392/G3/LR4/177; Four AG4/377/377/177; Four AG5/398; Eight AG10/389/G10/LR1130/189; Four AG1/386/G12/LR43/186 and eight AG13/357G3/A76. I just used the sizes listed on the Revain product page but I think it was only for the AG5/398 size. I wish they had a larger selection of small batteries. But that's just my preference. At such a low price, I'm certainly not complaining. I just need to buy some smaller batteries separately. Given that I've seen other similar battery packs sold for $20 or more on other sites on the web, I'd say I'm still ahead of the pack even when factoring in the cost of smaller batteries. So I think this 40 battery pack is a great deal not only for the amount of batteries I get but also for the range of the batteries. Many thanks to Deerso through Revain for providing this article on the Revain MarketPlace.
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