Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Puch 500
Table title:
Development
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Type </th><th colspan=1 rowspan=1 > Production year </th><th colspan=1 rowspan=1 > cc </th><th colspan=1 rowspan=1 > Power </th></tr>
<tr> <td colspan=1 rowspan=1 > 500 </td><td colspan=1 rowspan=1 > 1957–1959 </td><td colspan=1 rowspan=1 > 493 </td><td colspan=1 rowspan=1 > 16 hp (12 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 500 D </td><td colspan=1 rowspan=1 > 1959–1967 </td><td colspan=1 rowspan=1 > 493 </td><td colspan=1 rowspan=1 > 16 hp (12 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 500 DL </td><td colspan=1 rowspan=1 > 1959–1962 </td><td colspan=1 rowspan=1 > 493 </td><td colspan=1 rowspan=1 > 20 hp (15 kW) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 700 C (Combi) </td><td class="highlighted"  colspan=1 rowspan=1 > 1961–1968 </td><td class="highlighted"  colspan=1 rowspan=1 > 643 </td><td class="highlighted"  colspan=1 rowspan=1 > 25 hp (18 kW) </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 700 E (Combi) </td><td class="highlighted"  colspan=1 rowspan=1 > 1961–1968 </td><td class="highlighted"  colspan=1 rowspan=1 > 643 </td><td class="highlighted"  colspan=1 rowspan=1 > 20 hp (15 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 650 T </td><td colspan=1 rowspan=1 > 1962–1968 </td><td colspan=1 rowspan=1 > 643 </td><td colspan=1 rowspan=1 > 20 hp (15 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 650 TR </td><td colspan=1 rowspan=1 > 1964–1968 </td><td colspan=1 rowspan=1 > 660 </td><td colspan=1 rowspan=1 > 27 hp (20 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 650 TR II </td><td colspan=1 rowspan=1 > 1965–1969 </td><td colspan=1 rowspan=1 > 660 </td><td colspan=1 rowspan=1 > 41 hp (30 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 500 S </td><td colspan=1 rowspan=1 > 1967–1973 </td><td colspan=1 rowspan=1 > 493 </td><td colspan=1 rowspan=1 > 20 hp (15 kW) </td></tr>
<tr> <td colspan=1 rowspan=1 > 126 </td><td colspan=1 rowspan=1 > 1973–1975 </td><td colspan=1 rowspan=1 > 643 </td><td colspan=1 rowspan=1 > 25 hp (19 kW) </td></tr>
</table>
Question:
What are the differences between 700 C and 700 E?
Answer:
In 1961, two models were launched with 700 C and 700 E both featuring a 643 cc engine but with different power ratings.