Sades G811
https://www.gearbest.com/earbud-headphones/pp_1755185.html?lkid=10690141
How to wear: headwear; Speaker diameter: 50mm (ndfeb)
Frequency range: 20-20.000hz.
Sensitivity: 114 plus or minus 3dB 1 KHZ.
Impedance: 32 1 KHZ
Maximum input power: 20mw.
Microphone sensitivity: -32db + 3 dB.
Microphone frequency range: 50-10khz.
Microphone impedance: less than 1kHz 2.2k.
Length of headphone: approx.1.5m input interface: 3.5mm.
Special design: excellent enhancement stereo: high precision 40mm drive
SadesSA-810
https://www.gearbest.com/earbud-headphones/pp_1721168.html?lkid=10690141
Sensitivity: 23.5111 plus or minus 3dB 1 KHZ.
Impedance: 32 1 KHZ
Input power: 30mw.
Microphone sensitivity: -54db plus or minus 3 dB.
Frequency range of microphone: 20-20khz.
Mic impedance: 2.2 k or less microphone point: all is
Cable length: 2.2m input interface: 3.5mm in diameter.
Low human body engineering design: head beam stress points,
and more suitable for parents play time when 15 degrees of freedom to tackle the reverse split type cool earmuffs,
alleviate the pressure of the various type head wear,
increase wearing comfort of low 40 mm high fidelity neodymium speakers
Sades R1
https://www.gearbest.com/earbud-headphones/pp_1719941.html?lkid=10690141
Input power: 30mw.
Microphone sensitivity: -40db plus or minus 3dB.
Frequency range: 50-10khz MIC.
Length of headphone: approx.2.2m.
Input interface: USB
Weight: about 420g.
Special volume control has 3 different light modes (light, bright light, breathing light) and 3 different vibration modes (no vibration, low vibration, high vibration)
Compatible platform: Android mobile iOS.