A4 Wired Earphone Dual Driver 3.5mm Port Bass Stereo In-Ear Sports Waterproof Earphone (Four-loudspeaker version, Blue)

The wired earphone uses two moving circles technology, four loudspeakers for loseless sound quality. Sound insulation and 3.5mm plug, it is comfortable to wear to enjoy stereo music. 

Features:
Two moving circles in the same direction technology, and four speakers make sound at the same time, loseless sound quality.
Air pressure balance design can eliminate four diaphragm resonances loss of air pressure eardrum.
60 degree angle in ear, painless comfortable wearing, will not fall easily.
Sound leakproof metal rear cover, sound insulation to immerse in music world.
Skin-friendly elastic thread, strong tensile force, no knotting.
Humanized wire control design, call, music and volume easily switch.
3.5mm plug, suitable for most mobile phones, tablets, MP3, MP4, etc.

Specifications:
Material: Plastic + TPE
Type: Two-loudspeaker version, Four-loudspeaker version (optional)
Color: Black, White, Red, Blue (optional)
Type of Headphones: In-Ear
Impedance: 32Ω
Phone Sensitivity: 99dB/mW
Frequency Range: 20-20000Hz
Plug Type: 3.5mm Straight Plug
Driver Unit: 2BA+1DD Hybrid Drive Unit (Dynamic Compound + BA Compound)
Microphone: with Microphone
Cable Length: 1.2m / 47.24in
Package Weight: 15g / 0.53ounces
Package Size: 150 * 80 * 20mm / 5.91 * 3.15 * 0.79in

Packing List:
1 * Wired Earphone