So this is what OnePlus x JBL was about: $40 E1+ Earphones

It would be unfair to say that it's been a while since OnePlus announced its own set of earphones. The buds, just a couple of hours after announcement, went out of stock as expected. You would've expected something like that anyway, since they're attractively priced -- like the OnePlus One itself -- at US$15.

Strangely enough, OnePlus has announced another set of earphones, but this time in partnership with another company -- the audio equipments giant in JBL. Followers of GizChina would know that something was due, since OnePlus had been teasing with a 'OnePlus x JBL' theme.

So what are these earphones? For starters, they're called 'OnePlus x JBL E1+ Earphones'. Quite a long name we say! For those that care about the tech specs, here's what the E1+ buds will come with:

• Driver: 9mm
• Freq: 10 – 22kHz
• Impedance: 32 ohms
• Maximum SPL: 105dB @ 5mW
• Rated power input: 5mW
• Connections: 3.5mm jack
• Cable length: 1.2m
• Weight: .01KG

OnePlus says that the E1+ earphones are "specifically crafted to enhance the powerful sound of the OnePlus One". It comes with an in-line remote with a mic and three buttons, using which you will be able to take control of your music (shift tracks, adjust volume) and even take pictures.

As you would expect, the E1+ earphones are marketed as more premium and consequently more expensive than the Silver Bullet earphones. And therefore, you'll have to pay US$40 to get a pair of the E1+, which is more than twice the cost of the US$15 Silver Bullet buds.