As usual, I like to explore even the most cheap earphones you can find, and see how low can we go with the price without sacrificing the listening experience too much. Unfortunately, I received a defective left channel, although it's hardly surprising. These used to cost extremely cheap, and are very hard to find nowadays. But don't worry, you're not missing out on anything.
Although these earphones offer very decent mids and surprisingly responsive highs, the bass is poor and inaccurate and the build quality is worrying. You should look elsewhere for cheap earphones.
The E3 look suspiciously similar to Ivery IV-3 and AWEI ES100i/ES200i, but has a different cable.
Very decent mids and vocals.
The highs are impressively extended.
Very comfortable to wear, even with the included tiny tips.
Pretty weak bass response, and the bass itself isn't accurate.
The build quality is pretty poor, they look and feel fragile.
Unsurprisingly, I got a defected left channel.
The package and its contents are very very poor.
Package & Accessories
Soft plastic (clear)
Ear Tips - Single-Flange:
2×S, unique, black, ø6mm bores
M, black, ø5mm bores
Build & Materials
Metal, ø6mm nozzles, stiff strain reliefs
Metal + TPE, soft strain relief
TPE, soft, mildly bent
Metal, straight, short, soft strain relief
Comfort & Fit
Interestingly enough, I could achieve a great seal even with the tiny included tips. The earphones are tiny, light and very comfortable. No issues here whatsoever.
Lows / Bass
The lows are quite inaccurate and tend to get distorted. They definitely don't go too deep, which makes the sound pretty dry.
Mids / Vocals
Not the most impressive mids and vocals I've heard, obviously, but are still much better than other low-ranked earphones. The mids are bright and just slightly off-tone, and aren't usually sibilant. I was impressed that such mids can be achieved for such a low price.
Highs / Treble
Surprisingly, the highs are quite nice. They are crisp but also slightly sharper than tolerable. Still, these highs are quite impressive considering the dirt-cheap price these earphones cost.