CCA KZ AZ09 IEM Bluetooth Adapter, Bluetooth 5.4 Module, Wireless Waterproof Ear Hook Extra, Long Battery Life Cable for ​KZ ZS10 PRO/X/2, ZSN Pro/X, AS16 PRO, Zax,ZAR, CRA/C12(C pin)

Another great purchase to write about! I work around our property every weekend and being a music lover I always have ear buds in so I can listen to tunes while I work. The problem is apparently my ears are misshapen in some way that makes every ear bud I've tried not seat correctly so the buds fall out of my ear. Anyone who constantly has to readjust or push their earbuds in can feel me on that point.I wanted a quality ear bud that fit securely and wouldn't come loose as I worked - and this product didn't disappoint. I will say that being Chinese made, it has some funny quirks - it sounds like the lady announcing that the device has connected says "Connectate" instead of "Connected". I don't really care about that though - all I care is that the sound is good quality and the buds stay firmly in my ear. This product did both very well and I'm loving not having to take my buds out and reseat them every 5 mins. I'm using a after product foam type ear piece - you can squish it down tight, put it in your ear, and it will expand to fit perfectly.Battery life has been great for the time I've had these (about 6 months). I'll work around our 7 acre property for 6-7 hours without having to charge and it still has juice left if I forget to charge them.This also has an option to be used as a corded ear bud as well, which I did find useful since I travel a lot and use headphones with a plug while flying to watch movies or listen to music. Now I have the best of both worlds.From a cost/value perspective you can't beat the price and they do seem to be of good quality. I would recommend this to anyone looking for a versatile set of music buds, that stay put in your ear and block out unwanted noise, keep their charge for 7+ hours, and are easy to pair to your phone/tablet or computer.I'd definitely buy them again.

These things blew my expectations out the water. Paired with the Bluetooth adapters, make this price to performance hard to compete with. They are not the best compared to more expensive versions, but I promise you they do not fall to far behind either. Built in tuning for better sound as well. The clarity to bass ration is phenomenal. Build quality is top notch. The design sits perfect in the canal for almost zero fatigue. Highly recommend.

I still have the set and charging case and it still works fine. Best pair of earphones I've ever had before. Sound is great as long as they are fitted in your ear correctly. I use them when I mow the yard mainly, that's how good they are. Though they will slip loose and let sound in as I get sweat on my head.They don't last all day on a single charge either but they can go for a couple of hours before needing to be put back in the charge case if your using the BT mode. I also have the wires so I don't have to use the Bluetooth/Battery adapters unless I want to. The units pair with any Bluetooth device, so I can use them with my phone, or either of my computers easily.I got the earphones with wires for $20 and the BT and battery for $30 so a little over 50 dollars for all the components. Considering how expensive name brand versions of these things are I feel like these were priced fairly and was a good deal. Thanks

works great for keeping my KZ ZS10 Pro safe travel case and ready to go as a BT in-ears.They fit great around the ear and connect quickly to BT devices. BT is a solid sounding and great connection.fast charging and holds the charge.

I've purchased 6 KZ IEMs, the bluetooth cable for "paragraph b" connectors, and a dozen wired cables previously. I love the IEMs, but got tired of the cables wearing out quickly. So I upgraded to KZ IEMs with the newer "paragraph c" connector, and got this Bluetooth charging case.From the beginning, the right battery/earhook would only occasionally charge. I had a lot on my plate, and assumed I was doing something wrong, because it worked maybe 1/10 times.I just put the left battery and IEM in naturally, and it always works. I checked both sets of contacts for the right battery, and came to regularly try taking it out and placing it back in as the manual says, as we'll as wiggling the right battery and IEM around in it's compartment, and pressing the battery down in the compartment to make sure the contacts connected. That didn't change the fact it would only charge 1/10 times. I tried only charging the earhooks with the case also charging via USB-C, and only charging both battery/earhooks at the same time, even though the instructions don't say you have to, and even imply you can charge them seperately. Those didn't work either.Today I finally put them in at a time when I had nothing else to do, and experienced the same issue as always, and thought I'd leave a review. If this charging case has issues, don't try to troubleshoot them yourself. Just return them in the return window.I should also mention that the bluetooth does well through a room. But the manual states you should have your phone on the same side as your earhook, I am assuming when the connected device you are playing from is in your pocket. Obviously when you're wearing both earhooks your device can't be on both sides of your body at the same time. I have found silly things block the bluetooth for the earhooks compared even to very old bluetooth headphones. Sometimes I lay with my arm over an ear, and it cuts out. One time I was just sitting around and it was cutting out, and in that one occasion, even holding the phone right up to one earhook didn't allow for stable audio. Just test them thoroughly while you can still return them.