Oyaide Ultrasone edition...tip to the base include small extended = 1.87 cm.
Normal Oyaide...tip to the base include small extended = 1.60 cm.
Small extended of Ultrasone edition is longer.
Okays, thank you for your response and help:)
Now the ViaBlue jack can use with a small hole of the iPhone case.
Thank you for your attention.
That's excellent work. You're an inspiration!
It is 4.4mm. long in Ultrasone version.