I have a JBL SH12 headphone which is at least 4 years old. It works perfectly fine. Bluetooth, aux port is also good. Its battery started to show its age after approx. 3yrs 6months and now it lasts for only half an hr. But it can be replaced easily. Advantages of such headphones over wired headsets are even if aux cable damages then you can easily replace it with Bluetooth as temporary option till new cable comes. But if the jack/wire of wired headset gets damaged then you have to replace it with new headphone or fix the jack by some expert which is sometimes tedious. 90% of the times the headphones are working fine but due to jack connection problem one of the speakers stop working. Many people think the problem is in headset and replace it but problems are in jack while headphone works perfectly fine. Headphones of such type have additional advantage that they are wired by AUX cable which can be easily replaced if damaged. But it emits high magnetic field emf since it does not have a iron body near speakers. High emf field is found to be cancerous for small children and can cause blood cancer.