There's a good reason why I dislike Bluetooth earphones, and that's always has to do with the compromises you have to consider before getting one of them. Just as I suspected, these Bluetooth earphones suffer from the main issues many other Bluetooth earphones suffer - low volume, inaccurate sound and a major lack of bass.
As always, I'm not very inclined to recommend Bluetooth earphones if you care about sound quality at all.
NOTE: I am unable to take frequency response measurements for any Bluetooth earphones.
The design is simply but very effective, very portable and light.
The sound is very artificial and unpleasant.
The bass is lacking in punch and depth.
The volume levels are quite low.
Package & Accessories
Paperboard + soft plastic (clear)
Ear Tips - Single-Flange:
S+M+L, black, Ø6mm black bores
Build & Materials
Metal, Ø5mm nozzles, rigid strain reliefs
Plastic (matte), triple-button
Fabric + TPE, extra-soft, super-straight
Comfort & Fit
I got a perfect seal straight out of the box. The cable holds the earphones on your neck comfortably, allowing you to safely carry them around with you just like a necklace when you're not using them.
Lows / Bass
As expected, the bass isn't impressive, it's shallow and flattened out. It's clear but not impactful, and barely adds any environmental sensation.
Mids / Vocals
The mids are nice. They aren't as loud as I would like them to be, and there isn't anything particularly impressive about them. They are quite lacking in depth as a result of weak bass response, and even sound sibilant at times.
Highs / Treble
The highs are sharp but not quite detailed. They even sound colored and artificial. Not very pleasant.