Request for help in configuring Product Features and "Layered Navigation Block"

[onlydeshpande]

We are building a webstore for Timex watches on Prestasho. One watch will have many features - for example - one watch may have feature#1 as "dual time watch" and same watch may have feature#2 as "Alarm". I am not sure how to input these features in Prestashop.

 

If i were selling mobile phones, i would have created one of the features as "screen width" and would have put "6 cm" as feature value. But, in case of watches, what i need is just mentioning the available features as 1. backlight 2. date indicator 3. dual time.

 

I can still create these features and put the feature value as "feature available". But if i use "Layered Navigation Block" module, the feature value "feature available" gets displayed below the feature; it looks bad. Whats solution for this? Can't I just add Feature and leave the "Feature Value" Field empty?

 

Secondly, the module "Layered Navigation Block" uses "AND" logic and not "OR". It shows only those products which possess all the properties of selected features. What I am looking for is "OR" logic. How to change the logic of "Layered Navigation Block" module to "OR" from existing "AND"?