Model FA7 FH5 FD5 FD1 FD3 FD3 Pro FD7 FDX
Type 4 balanced armature drivers 1 dynamic driver + 3 balanced armature drivers 1 dynamic driver 1 dynamic driver 1 dynamic driver  1 dynamic driver  1 dynamic driver  1 dynamic driver 
BA Knowles CI-22955 + ED-29689 + dual BA driver SWFK-31736 Knowles ED-30262 + dual BA driver TWFK-31082 N/A N/A N/A N/A N/A N/A
DD N/A 10mm PU+PET polymer nanocomposite dynamic driver 12mm DLC+Beryllium-plated diaphragm 10mm Beryllium-plated dynamic driver

12mm DLC Diaphragm

 Dynamic Driver

12mm

DLC Diaphragm

 Dynamic Driver

12mm Pure beryllium diaphragm dynamic driver

12mm Pure beryllium diaphragm dynamic driver
Frequency Response 20~40kHz 15~40kHz 10~40kHz 10~40kHz 10~40kHz 10~40kHz 10~40kHz 10~40kHz
Sensitivity 110dB/mW (@1KHz) 112dB/mW (@1KHz) 109 dB/mW (@1KHz) 109 dB/mW (@1KHz) 111 dB/mW (@1KHz) 111 dB/mW (@1KHz) 111 dB/mW (@1KHz) 111 dB/mW (@1KHz)
Impedance 23Ω(@1KHz) 19Ω (@1KHz) 32Ω(@1kHz) 32 Ω (@1KHz) 32 Ω (@1KHz) 32 Ω (@1KHz) 50 Ω (@1KHz) 50 Ω (@1KHz)
Plug 3.5mm L-shaped gold-plated stereo jack 3.5mm L-shaped gold-plated stereo jack 2.5mm/ 3.5mm /4.4mm 3.5mm L-shaped gold-plated stereo jack 3.5mm L-shaped gold-plated stereo jack 2.5mm/ 3.5mm /4.4mm 2.5mm/ 3.5mm /4.4mm 2.5mm/ 3.5mm /4.4mm
Cord Length 1.2m 1.2m 1.2 m 1.2 m 1.2 m 1.2 m 1.2 m 1.2 m
Weight (per earbud) About 5.2g (excl. the cable) About 7.1g (excl. the cable) About 11g (excl. the cable) About 4.5g (excl. the cable) About 7g (excl. the cable) About 7g (excl. the cable) About 11g (excl. the cable) About 11g (excl. the cable)
Color Multiple Titanium Silver  Blue / Black Black/Silver Black Black and gold Gold
Detachable Cable Design Yes (standard MMCX connector) Yes (standard MMCX connector) Yes (standard MMCX connector) Yes (0.78 Pin) Yes (standard MMCX connector) Yes (standard MMCX connector) Yes (standard MMCX connector) Yes (standard MMCX connector)