I have tried the iPhone, and it fits nicely.
You are welcome to check it out.
MEElectronics Sport-Fi S6 Sport Earphone, with Memory Wire, plus Armband.
• Your ultimate workout earphones
• Perfect for your active lifestyle
• Memory wire for a locked-in fit
• Over-the-ear design
• Modular cable system for easy, varied use
• Deep ear insertion to boost your energy to the music
• Keeps you in rhythm and the zone during your workout
• Enhanced sweat resistance
• Includes neoprene sports armband
What's in the Box
• Sport-Fi S6 Earphones
• Neoprene Sport Armband
• 3.5 mm Extension Cable
• Shirt Clips (attached) x 2
• Carrying Case
• 6 Pairs of Eartips
• Instruction Manual