OKCSC Bluetooth 5.0 Replacement Cable Detachable Earphone Cord Conversion Cable DD4 Audio Adapter with Microphone for The Series of A2DC Jack as ATH-CKR100 ATH-CKR90 ATH-CKS1100 ATH-LS400(A2DC)

I think for the price this is definitely worth it. I have purchased 2 different Bluetooth mmcx adapters, the other one being the Luxuray one. This cable most definitely has a stronger connection than the other one I bought, and actually quite an impressive connection for the price. Does have a hiss/buzzing sounds sometimes that can get annoying. If you own earphones with the MMCX connector and are considering getting a Bluetooth connection I recommend trying these if your budget is <$20. If you want something of quality and can spend more I'd reccomend MEEaudio's solution for $60 which is excellent. I use these with the Westone w30 and have no issues with them so far.

Pretty good deal for this cable. The functions are similar to my other BT earbuds but not as good as the over-the-neck headset earbuds (LG Tones, etc.); I liked those for the vibrating function of incoming calls and battery life notification, but they did not survive under heavy use from putting on and taking off my motorcycle helmet.Battery comparison:The battery life for these so far only tell you when the battery is low and needs to charge. Also, battery life does not seem to last as long as the Tennmak BT cable or my other previous BT headsets, but is good enough for commute riding. I use this with the Tennmak Pro MMCX earbuds. This one replaces the Tennmak BT cable.Cable comparison:The cable seems to be better than the Tennmak, but time will tell; this cable is a bit more nimble yet sturdy, but yet still seems stronger at the main connection point where it comes out of the power buttons than the Tennmak. The Tennmak ripped within 3 months of use, though still functional; I duck-taped the Tennmak connection before it fully separates to get a bit more life out of it for now.I will provide update depending on how long this cable actually lasts based on my usage.Update 3/8/19:So far so good. It's lasting and no physical signs of failure yet. There is one thing to add is that it does not support apt-x/aptx...but if you're not an audiophile, it still produces crisp sound and works fine. Calls are still clear as well. Also like others mentioned, these tend to slide to one side due to uneven weight on each side when hanging down.Additionally, should mention these were compared to the old Tennmak version whereas the new Tennmak model is now equivalent to those over-the-neck rigid style, so I don't have a comparison with the new model.

I can recommend these given the price, but on my example the right MMCX connector was loose on my Shure 215s. I've no reason to doubt that the seller wouldn't stand behind its products, but for under $20 I figured I'd take a chance and bend the ring connector rather than go through the hassle of a return. It works about 99%, but the channel will still occasionally drop out. I also wish the cords were slightly longer. As other reviewers have pointed out the the mike/electronics bundle can tend to pull at an awkward angle.I haven't had any issues with battery life , at modest volumes I get 3+ hours of run time. The fidelity is what the fidelity is - it uses Bluetooth SBC similar to most low cost Bluetooth devices. Be prepared to spend significantly more for higher quality codecs that may or may not be supported. If it wasn't for my connector problem it would easily be a 4 star device.

I bought this cord for my Shure SE215 IEMs - I was pleasantly surprised by the clear sound. The range is a little wonky at times (don't put your phone in your back pocket; the sound will cut out), but overall ok. However, it takes me about 2 hours to mow my 1-acre yard, and the battery - straight off the charger, with a full charge - only lasts an hour and a half or so, which makes this cord not quite enough for what I needed it for.

These were purchased because I couldn't stomach paying $100 for the Ultimate Ears version that is supposed to go with my UE900's. It works fine. It only has about a 3-hour battery life. So it kinda works ok for me. They are fine for the everyday use and going on short to medium runs.Not really great for plane rides longer than 3 hours. They work fine. Nothing to ride home about. I think I will end up buying the actual device from UE just so I can have the full 8 hr battery life.

I’m a skydiver and indoor skydive instructor. These are best priced and do the exact same thing that the shure brand does m, only it’s a small fraction of the price. This is my second pair in over 2 years of abusive use

A great accessory to add if you own a pair of Shure IEMs like myself. Definitely beats buying a new pair of Jaybirds that broke on me.The connectivity on this thing however is horrendous. Any kind of blockage in-between myself and my phone just causes skips. Feels like the old Walkman CD days! If you have a clear line of sight however, it works just fine.If you own a compatible pair of IEMs, definitely buy this to try it out. It'll add versatility you may never had for cheap. Just don't expect the best connectivity in the world.

The device likes to try to fade in the sound when it starts playing. This would be a nice feature except for the constant dropouts in the audio, causing it to constantly fade in and out and makes it very difficult to listen to anything, which, of course, is the point of headphones.EDIT: The dropouts are manageable if you hold your phone within a few inches of the headset cable. Also when this device gets to about 40% battery left, it starts playing a voice message every five seconds which makes it difficult to continue using. So it never runs out of battery because it becomes too annoying to use long before it runs out.