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)

I’ve been using the KZ AZ09 adapters with my Melody IEMs for about five months now, and they’ve quickly become my go-to setup for work and daily use. The bass hits hard, the clarity is excellent, and they get plenty loud without distortion. No compromises in sound quality compared to wired use—they drive my IEMs effortlessly.Pairing is instant, and I’ve had zero connection drops. I’ll leave my phone in my truck and walk around a job site or warehouse, still connected clearly over 100 yards away. Battery life is phenomenal—I get multiple full workdays without needing a recharge.The charging case is simple and solid. It announces when you’re connected, and it’s never let me down. The touch controls are responsive and cover all the basics: play, pause, skip, volume. I’ve made calls with them too, and the mic quality is surprisingly crisp—no one’s ever complained.They’re also ridiculously comfortable and secure. I forget I’m wearing them most days, even after hours of moving around. The build quality is legit—they’re sturdy, not flimsy, and they’ve survived multiple drops without a hiccup.At this price, the AZ09s are a no-brainer. If you’ve got a favorite pair of IEMs and want to go wireless without losing sound quality or reliability, these are absolutely worth their weight in gold.⸻✅ Pros:• Fantastic bass and clarity• Incredible Bluetooth range (100+ yards)• Long battery life (multi-day use)• Reliable, quick pairing• Comfortable and secure all-day wear• Durable build—survives drops❌ Cons:• None that I’ve encountered

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.

Works as advertised.There was only one major issue upon opening the packaging: none of the instructions were in English. I guess my model was a direct-to-China/-to-Singapore model?! Thankfully, a few reviews online included photos of the English instructions. Otherwise, the functionality is great—and they are incredibly light on the ear. I literally slept wearing them in the first 24 hours. Also, the promised battery life seems rather conservative. I am approaching 7 hours of playback, and all indicators show >50% battery charge remaining. So far, so good.

These things are amazing, they sound just like the wires, I used them all day today and had no problems but I was like "damn I wish they would get a tiny bit louder" but didnt complain bc it was the perfect volume but I like loud so 2 hours went by and i was gonna switch to high performance but forgot you can only switch on the right ear so I clicked on the left 3 times and it got really loud so I was very happy bc thats the loud I like lol. It was a cool little cheat code I found