Native Blackberry 10 App and MS Exchange integration

Native Blackberry 10 App and MS Exchange integration

Hello,
 
My company is currently evaluating Zoho to replace our current CRM system. As we have sales operatives that work in rural area where internet coverage can be unreliable it is critical to our decision that we can cache data on our Blackberry Z10, Q10 and Z30 devices so that they can continue to operate in poor reception areas. Please confirm whether this is a current capability?
 
Please also confirm the capability to sync or plugin to MS Exchange?
 
Regards
 
Chris Clifford