Compatibility problems pairing 2 Wonderboom speakers (2 & 3) As far as Back Market's ethical, ecological and value-for-money propositions are concerned, they seem to be good ones! However... sometimes obvious technical information is missing (which could be more easily accessible before confirming the choice of a product, such as the compatibility of pairing 2 Wonderboom speakers together, for example!) Hence the return of the product! 🙃 I may order here again as I liked the policy and concept of this online refurbished products shop, well done 🙂 Delivery question: fast and well packaged!