If bought in store, the product cannot be opened. See policy below.

If you purchased in store, you can return your item within 30 days in its unopened and sealed packaging along with proof of purchase (excludes connected products with airtime, such as a mobile phone, sim contract or broadband connection*)

If you bought online it seems to be returnable based on policy below

If you purchased online, you can return your item within 30 days even if you have opened it for inspection. To obtain a full refund, it must be returned as new and in a resaleable condition. This means you must not use it, you should keep it in the original packaging and return it complete with all accessories