If you are a student / have an active student email to get yourself registered on MyUniDays website which will give you a 25% discount on Sennheiser websites(UK, USA and others). This discount can also be applied to other products on their website.
Once you get yourself registered on MyUniDays look up Sennheiser in the search bar, then copy the code and paste it on the checkout page at Sennheiser's website.
By the way the delivery is free.
So this discounts £22.50 from the actual £89.99 price.
At the moment it's really hard to get the Android version at this price without having to worrying about if it's genuine or not.https://www.myunidays.com/GB/en-GB
My research on these headphones:
#On Amazon there are a lot of reviews indicating the wire's shell tends to break near the jack but you'll be covered by the 2 year manufacturer warranty.
#The sound signature is V shaped, meaning the mids are slightly recessed but won't be an issue for most people.
#The Bass is tight and controlled.
#The Highs are crisp and clear.
#Some reviews were saying the buds slip out of the ear with minimal force.
#If you buy these headphones from a third party dealer look for the hologram on the right hand side of the box to see if its a genuine product.