Audio Technica ATH-C550is 3.5mm Wired Earphone Flat-head Earbuds Pure Sound Music Earphone for iPhone/Samsung/XiaoMi/Android

Main features:

Enjoy powerful and high-quality sounds,
Built-in microphone and control for answering calls and operating music playback on your smartphone,
Equipped with winding clips, adjustable wire length,
Comes with a sponge earmuff for a snug fit.

Technical indicators (headphones):

Category: dynamic
Drive unit: neodymium magnet
Frequency response: 18 ~ 22,000Hz
Maximum input power: 40 mW
Sensitivity: 105 dB / mW
Impedance: 16 Ω
Weight: about 5 g
Wire: 1.2 m Y type
Plug: Ø3.5 mm 4-contact L-shaped mini gold-plated stereo plug
Standard: Winding clip; sponge earmuffs

Technical indicators (microphone)

Category: Electret Capacitive
Directivity: Omnidirectional
Frequency response: 100Hz ~ 10,000Hz
Open circuit sensitivity: -42 dB (0dB = 1V / Pa, 1kHz)