I believe that most cards have an added currency exchange fee (including this Schwab card).
It doesn’t include “currency exchange fees; fees imposed by merchants for POS transactions; or fees for stamp purchases, balance inquiries, or any transactions other than an ATM cash withdrawal from your Schwab Bank account.”
“We do not charge any fees for use of any ATM. If you use a machine that is not a Schwab Bank ATM, you may be charged a fee by the ATM operator or any network used. This may include a fee for a balance inquiry even if you do not complete a withdrawal or other monetary transaction. We offer a rebate on these fees assessed by others: For Interest Checking, Regular Checking, and Basic Checking up to first 6 transactions not to exceed $9.00 per statement period. Schwab Bank reserves the right to discontinue or modify the ATM Fee Rebate program at any time. Please see your Schwab Bank Deposit Account Pricing Guide for details.”
There are limits, but for most I would think this is still a great card.