These are a different pair with 4.1. I got the 4.0 yesterday and they are impressive for the price. Bass is nice too. I assume these would be just the same.
Mpow Cheetah Bluetooth 4.1 Sport Headphones $9.99 at Amazon
retail: $80
$9.99
Ben's Best
Blue/Green/Yellow colors only.
Amazon with Patozon has the Mpow Cheetah Bluetooth 4.1 Wireless Stereo Sport Headphones Earbuds with AptX and Built-in Mic (5 colors) for $27.99 - $18 off with code
VQQQF2PW at checkout =
$9.99 with free shipping for Prime members or on purchases $35+.
Goes for $28+ around the web.